Windows Server 2025 RDP Freezing Issues: Solutions and Insights for IT Pros

Windows Server 2025 Security Update Sparks RDP Headaches: What IT Pros Need to Know
In a concerning turn of events for system administrators and IT professionals, Microsoft’s February Patch Tuesday update for Windows Server 2025 (KB5051987) has introduced a significant hiccup: freezing Remote Desktop Protocol (RDP) sessions. This issue, which also impacts Windows 11 version 24H2 systems, has left many scrambling for solutions as remote connections become nearly unusable.

The Issue at a Glance​

The crux of the problem lies in the way RDP sessions behave following the security update. Shortly after connecting, sessions freeze almost immediately, leaving users with unresponsive mouse and keyboard inputs. Key details include:
• RDP sessions freezing on the login screen or even during active use
• Frequent need for disconnection and reconnection to regain responsiveness
• Elevated frustration in environments where remote access is mission-critical
While Microsoft has acknowledged the issue—a move that often lends much-needed transparency—this has particularly impacted IT administrators who depend on stable remote connectivity to manage servers and troubleshoot issues.

Which Systems Are Affected?​

The update KB5051987 has not played favorites. Its disruption extends to:
• Windows Server 2025 environments, where many enterprise-level applications and remote management routines are at a standstill
• Windows 11 version 24H2 systems, which have seen similar symptoms, albeit with a partial workaround
In response to growing user concerns, Microsoft rolled out an optional preview update (KB5052093) on February 25, 2025 for Windows 11 version 24H2. This preview aims to alleviate the RDP freezing issues on that platform. However, a similar remedy for Windows Server 2025 remains in the pipeline with no specific timeline announced, leaving enterprise server administrators in a precarious position.

Immediate Workarounds and Interim Measures​

For organizations grappling with this disruptive update, several workarounds may help mitigate the impact while waiting for a permanent fix:

• Disconnection/Reconnection – While not ideal, simply disconnecting and reconnecting the RDP session can temporarily restore input functionality.
• Group Policy Adjustments – A tweak in the Group Policy, specifically enabling “Select network detection on the server” under the Remote Desktop Session Host settings, has shown promise in stabilizing the connection.
• Update Management – Consider delaying non-essential updates in environments where remote desktop functionality is critical. Monitoring upcoming patch release notes is advisable to ensure that the latest fixes are applied as soon as they become available.

These adjustments serve as temporary relief, allowing IT professionals a breathing spell while Microsoft works on an all-encompassing fix for Windows Server 2025.

The Broader Landscape of RDP Challenges​

The freezing issue is not an isolated case. Over the past months, a series of RDP-related challenges have emerged, underscoring the delicate balance between security updates and system stability. Some additional related concerns include:
• Instances where UDP-based connections (particularly from Windows 11 version 24H2 devices) experience disconnections lasting up to 65 seconds when interfacing with older servers
• Earlier updates that introduced issues with USB printers and network share functionality
Microsoft’s approach, utilizing Known Issue Rollback (KIR) mechanisms, is indicative of its acknowledgement of these challenges. However, the rollbacks, while sometimes effective in short-term fixes, underscore the necessity for more robust long-term solutions that do not compromise the overall functionality of critical services like RDP.

Expert Analysis and Industry Implications​

From an industry perspective, this incident highlights several ongoing challenges:
• The Trade-Off Between Security and Usability – Security updates are essential for fortifying systems against emerging threats. Yet, when these updates lead to severe usability issues, organizations are forced to weigh the risks of potential security vulnerabilities against the immediate operational challenges of downtime and connectivity loss.
• Impact on Remote Work – In an era where remote work has become standard, ensuring robust and reliable RDP functionality is paramount. Extended downtimes due to such glitches can lead to significant productivity losses, making it imperative for Microsoft to prioritize a reliable resolution.
• The Role of IT Administrators – IT departments are tasked with the dual challenge of maintaining security integrity while ensuring uninterrupted service. Advising a cautious approach to update installations, particularly in environments that demand high uptime, becomes a key strategy in navigating this complexity.
For IT professionals, the current scenario poses a reflective question: how can organizations better prepare for unforeseen issues arising from critical system updates? The answer might lie in strengthening testing environments, implementing staged rollouts, and employing detailed monitoring systems that can quickly diagnose and mitigate disruptions.

Practical Steps for Navigating the Situation​

Given the existing state of affairs, here’s a concise guide for IT teams dealing with the RDP freeze:

• Monitor Microsoft’s Release Notes
  • Stay informed about upcoming updates and fixes for both Windows 11 and Windows Server 2025.
• Adjust Group Policy Settings
  • Enable “Select network detection on the server” under Remote Desktop Session Host settings as a temporary workaround.
• Develop a Contingency Plan
  • Consider maintaining rollback capabilities to a previous stable state if RDP functionality is critical for your operations.
• Communicate with Users
  • Regularly update end-users on the status of the issue and provide guidelines on best practices during the interim period.

This step-by-step approach not only minimizes operational disruptions but also lays the groundwork for a more resilient IT framework in the face of future challenges.

Concluding Thoughts​

The freezing of RDP sessions following the KB5051987 security update is a clear reminder of the intricate balance between innovation, security, and reliability. While Microsoft’s partial fix for Windows 11 signals progress, the pending resolution for Windows Server 2025 remains a concern for many. As IT professionals, maintaining vigilance, proactive communication, and adaptable strategies will be essential until a comprehensive fix is deployed.
In these times of rapid technological change, one can only hope that Microsoft’s next move will swiftly iron out these issues, thereby restoring confidence in the seamless operation of RDP-based systems. For now, patience and judicious troubleshooting remain the order of the day in the Windows ecosystem.
Stay tuned for further developments and continue to share experiences on WindowsForum.com as we navigate this challenging landscape together.

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Source: CybersecurityNews Windows Server 2025 Security Update Freezes Remote Desktop Sessions Connection

 

[ChatGPT]

Windows Server 2025 RDP Freezing Issue: What You Need to Know​

Microsoft is currently grappling with a disruptive issue affecting Windows Server 2025 environments. A faulty security update released in February 2025 (KB5051987) has led to Remote Desktop sessions freezing under certain conditions. In this article, we break down the problem, explore its broader implications, and provide practical advice for system administrators navigating these choppy update waters.

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The Issue Unfolded​

After installing the February 2025 Security update, many Windows Server 2025 users have reported that their Remote Desktop sessions suddenly stall. According to Microsoft's advisory, soon after establishing a connection, the session becomes unresponsive—mouse and keyboard inputs effectively go into a freeze. This forces users into a cycle of disconnecting and reconnecting, causing significant disruption for enterprise environments that rely on uninterrupted remote administration.
Key details of the issue include:

• Faulty Update: KB5051987, pushed out on February 11, 2025, appears to be the catalyst.
• Immediate Impact: Remote Desktop connections freeze shortly after login, leaving input devices unresponsive.
• Troubleshooting Requirement: Current workaround involves disconnecting the session and reconnecting—a less-than-ideal solution for mission-critical operations.
• Fix Uncertain: Microsoft has not provided a definitive timeline for an update that fully resolves the issue, indicating that the underlying problem is complex.

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Historical Parallels and Lessons Learned​

This isn’t the first time Microsoft’s updates have led to communication disruptions in remote desktop environments. A similar incident occurred with Windows 11 version 24H2. In that instance, UDP-based Remote Desktop sessions connecting to legacy servers (Windows Server 2016 and earlier) would disconnect exactly after 65 seconds. The solution came with the March 27, 2025 security update (KB5053656), which effectively addressed the unexpected disconnects.
Comparison with the Windows 11 Glitch:

• Windows 11 Incident: UDP-based RDP sessions would disconnect after 65 seconds when connected to older Windows Server versions.
• Resolution: The issue was fixed in a subsequent update released in late March 2025, offering a clear path forward for affected users.
• Windows Server 2025 Situation: While similar in impact—disruption of Remote Desktop functionality—the current problem in Windows Server 2025 is particularly unsettling because it directly undermines the stability of newer infrastructure environments.

This historical parallel serves as a reminder that even well-established update channels can run into complex, unforeseen issues. It underlines the importance of robust testing and staged rollouts in enterprise IT environments.

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The Impact on Enterprise Environments​

For organizations that depend on Windows Server 2025 for remote management and business-critical applications, the issue poses several challenges:

• Operational Disruption: Constantly having to disconnect and reconnect to remote sessions can hamper productivity and increase downtime.
• User Frustration: When critical tools like Remote Desktop hang, support teams and end-users alike experience heightened frustration.
• Risk Management: Enterprises must now consider contingency plans, such as reverting to prior stable updates or employing temporary workarounds, until a permanent fix is available.

Administrators are advised to:

• Test Updates: Implement company-wide pilot programs to verify the impact of new patches before full deployment.
• Deploy Rollback Strategies: Consider the Known Issue Rollback (KIR) process where warranted, especially if the current dysfunction interferes with day-to-day operations.
• Stay Informed: Regularly consult Microsoft advisories and update release notes to keep abreast of fixes or further complications.

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Technical Insights and Expert Analysis​

At its core, the freezing issue with Remote Desktop on Windows Server 2025 may be linked to deeper problems with how certain security updates interact with the operating system’s networking components. Here are some technical takeaways:

• Underlying Complexity: The fact that cease-and-desist behavior of input devices occurs shortly after Remote Desktop connections suggests a possible conflict within the session initialization process.
• Protocol Interactions: Detailed analysis might eventually uncover that specific protocols or handlers intended to enhance security inadvertently hamper session stability.
• Comparison with UDP Issue: The similarity with the Windows 11 UDP-based disconnect issue provides both reassurance and caution; while remedies have been successfully applied in the past, a seemingly non-trivial bug could require more extensive recalibration in the case of Windows Server 2025.

These technical insights reflect general industry observations where new patches, though designed to tighten security and resolve existing vulnerabilities, sometimes produce unintended side effects. System administrators should adopt a meticulous approach to patch management, combining regular update testing with robust backup strategies.

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What Microsoft Has Advised So Far​

Microsoft’s advisory on this matter is both informative and cautious. The guidance clearly outlines the problem and offers a temporary workaround:

• Temporary Workaround: Users experiencing freezes are encouraged to disconnect and then reconnect the Remote Desktop session.
• Security Update Context: The advisory notes that the update responsible for the issue is KB5051987, and that subsequent updates—including the March 2025 release KB5053656 for Windows 11—resolved similar issues on older servers.
• Future Fix Timeline: Notably, no release date has been given for a fix specifically targeting Windows Server 2025, implying the remediation might require more complex intervention.

For enterprise devices that have received the March 27, 2025 update (KB5053656) or later, Microsoft reassures that no additional special measures, such as a Known Issue Rollback or Group Policy adjustments, are necessary. However, the advisory’s lack of a targeted timeline for Windows Server 2025 leaves administrators in a state of cautious waiting.

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Recommendations for Administrators​

Given the current scenario, system administrators are urged to approach this issue with careful, preemptive steps:

• Evaluate Your Update Strategy:
• Before rolling out new updates broadly, use test environments to simulate the impact of patches like KB5051987.
• Leverage control groups within your network to assess potential disruptions.
• Implement Robust Rollback Procedures:
• Document your update procedures and ensure you have a clear rollback plan in case a new update triggers critical issues.
• Look into Known Issue Rollback (KIR) options as temporary countermeasures.
• Monitor Official Communications:
• Continuously review Microsoft advisories and related technical bulletins to stay updated on emerging fixes.
• Use internal monitoring tools to quickly detect and address session freezes, minimizing production impact.
• Communicate with Users:
• Keep support teams and end-users informed about the issue, its workarounds, and any planned maintenance windows.
• Providing clear communication helps mitigate frustration and allows for smoother incident management.
• Plan for Future Updates:
• If you rely heavily on Remote Desktop connections for managing your enterprise servers, consider a more segmented update rollout schedule.
• Engage with IT security teams to balance the need for critical patches against the operational stability of remote sessions.

Taking these steps will help mitigate disruptions until Microsoft releases a definitive fix for Windows Server 2025.

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A Broader Look: Implications for the Future​

This incident with the February 2025 patch raises broader questions about update management in evolving IT environments. The fallibility of security updates, even from industry giants like Microsoft, reinforces several key lessons:

• The Complexity of Modern OS Updates: As systems become more intricate, ensuring full compatibility across various deployment scenarios grows ever more challenging. Even minor changes can ripple into significant operational disruptions.
• Importance of Staged Rollouts: Incremental updates and controlled pilot groups help identify anomalies before they affect the entire enterprise. Future updates should ideally incorporate more rigorous real-world testing protocols.
• Preparedness for Unforeseen Glitches: A robust backup plan and rapid response mechanism are crucial. Enterprises must not only prepare for cyber threats but also for operational hiccups resulting from vital security patches.

For system administrators, the experience underscores the vital importance of balancing security imperatives with practical operational requirements. As update cycles accelerate and IT environments become increasingly dynamic, these kinds of issues may unfortunately become part of the new normal.

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Conclusion​

The freezing of Remote Desktop sessions on Windows Server 2025 following the February 2025 security update presents a challenging scenario for IT professionals. While the issue echoes a similar problem seen in earlier versions with Windows 11, its impact on newer server editions underscores the need for caution in deploying system-wide updates.
Until a targeted fix for Windows Server 2025 is released, it is crucial for administrators to employ careful update testing, prepare rollback strategies, and maintain open lines of communication with users. Microsoft’s advisory offers temporary workarounds, yet the calling for vigilance and proactive patch management remains louder than ever.
This case serves as a reminder: maintaining operational continuity in modern enterprise environments is as much about managing the uncertainties of updates as it is about embracing the latest security improvements. As we await further fixes from Microsoft, the wisdom of a measured and forward-looking IT strategy has never been more apparent.

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By staying informed and prepared, Windows administrators can navigate these operational challenges while ensuring their systems remain secure and functional. The road to a permanent fix may be complex, but with proper planning and proactive measures, the impact of such glitches can be effectively minimized.

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Source: The Register Windows Server 2025 freezing after February patch

 

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In February 2025, Microsoft released security update KB5051987 for Windows Server 2025, aiming to enhance system security. However, this update inadvertently introduced a critical issue: Remote Desktop Protocol (RDP) sessions began freezing shortly after connection, rendering mouse and keyboard inputs unresponsive. Administrators found themselves repeatedly disconnecting and reconnecting to regain control, significantly disrupting remote management tasks.

The Emergence of the RDP Freezing Issue​

Following the deployment of KB5051987 on February 11, 2025, reports surfaced about RDP sessions freezing on Windows Server 2025 systems. Users experienced unresponsive sessions, necessitating frequent disconnections and reconnections. Microsoft acknowledged the problem, stating that the issue caused mouse and keyboard inputs to become unresponsive within the session, requiring users to disconnect and reconnect. (theregister.com)

Technical Analysis of the Problem​

The freezing issue appears to stem from how the KB5051987 update interacts with the RDP infrastructure in Windows Server 2025. Specifically, the update seems to disrupt input processing within RDP sessions, leading to unresponsive mouse and keyboard inputs. This disruption suggests potential conflicts between the update's security enhancements and the server's remote session management components.

Broader Implications and Similar Incidents​

This incident is not isolated. A similar issue affected Windows 11 version 24H2, where UDP-based RDP sessions disconnected after 65 seconds when connecting to Windows Server 2016 or earlier. Microsoft addressed this problem with the March 27, 2025, update (KB5053656), recommending users install the latest update to resolve the issue. (theregister.com)
The recurrence of such issues highlights the delicate balance between implementing security updates and maintaining system stability. It underscores the need for thorough testing and validation of updates, especially in enterprise environments where remote access is critical.

Impact on Enterprise Operations​

For organizations relying on Windows Server 2025, the RDP freezing issue poses significant challenges:

• Operational Disruptions: Administrators face delays in performing essential tasks due to unresponsive remote sessions.
• Increased Support Overhead: IT departments may experience a surge in support requests related to RDP connectivity issues.
• Security Concerns: Delays in applying security patches or performing system maintenance can expose systems to vulnerabilities.

Mitigation Strategies​

While awaiting an official fix from Microsoft, administrators can consider the following interim measures:

• Uninstall Problematic Updates: If the issue began after applying KB5051987, consider uninstalling the update temporarily.
• Configure TCP-Only RDP: Adjust Group Policy settings to use only the TCP protocol for RDP connections, which has been reported to alleviate freezing issues. (learn.microsoft.com)
• Optimize RDP Settings: Modify RDP client settings, such as setting the experience level to "High-Speed Broadband," to improve stability. (learn.microsoft.com)
• Monitor Official Communications: Stay updated with Microsoft's advisories for information on patches or workarounds.

Conclusion​

The RDP freezing issue following the KB5051987 update serves as a reminder of the complexities involved in maintaining secure and stable IT environments. It emphasizes the importance of rigorous testing and the need for prompt communication from vendors when issues arise. Administrators should remain vigilant, apply interim solutions as necessary, and monitor official channels for updates to ensure the continued reliability of their systems.

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Source: www.theregister.com Windows Server 2025 freezing after February patch

 

[ChatGPT]

In February 2025, Microsoft released security update KB5051987 for Windows Server 2025, aiming to address various vulnerabilities. However, this update inadvertently introduced a significant issue: Remote Desktop Protocol (RDP) sessions began freezing shortly after connection, rendering mouse and keyboard inputs unresponsive. Users were compelled to disconnect and reconnect to regain control, severely disrupting remote management and access operations.

The Emergence of the RDP Freezing Issue​

Following the deployment of KB5051987 on February 11, 2025, administrators and users reported that RDP sessions would freeze almost immediately after establishing a connection. This problem was not isolated; it affected a broad range of systems running Windows Server 2025. The freezing rendered remote sessions unusable, necessitating frequent disconnections and reconnections—a temporary and inefficient workaround.

Microsoft's Response and Advisory​

Microsoft acknowledged the issue, stating that after installing the February 2025 Security update (KB5051987) and subsequent updates, Windows Server 2025 devices might experience RDP sessions freezing shortly after connection. The company noted that when this issue occurs, mouse and keyboard input become unresponsive within the session, requiring users to disconnect and reconnect. As of late March 2025, Microsoft had not provided a specific timeline for a permanent fix, indicating the complexity of the problem.

Similar Issues in Windows 11 Version 24H2​

Interestingly, a related malfunction affected Windows 11 version 24H2. Users experienced UDP-based RDP sessions disconnecting after approximately 65 seconds when connecting to Windows Server 2016 or earlier versions. This issue, which began in January 2025, saw a significant increase in reports following the March security update. Microsoft addressed this problem with updates released on March 27, 2025 (KB5053656), recommending users install the latest updates to resolve the issue.

Community-Driven Workarounds​

In the absence of an immediate official fix for Windows Server 2025, the IT community explored and shared several workarounds to mitigate the RDP freezing issue:

1. Modifying Group Policy Settings​

One effective approach involved adjusting Group Policy settings to enhance network detection during RDP sessions:

• Access Group Policy Editor: Press Win + R, type gpedit.msc, and press Enter.
• Navigate to the Appropriate Policy: Go to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Connections.
• Enable the Policy: Find the policy named "Select network detection on the server," set it to Enabled, and choose "Use both Connect Time Detect and Continuous Network Detect."
• Apply and Reboot: Apply the changes and restart the server to ensure the new settings take effect.

This adjustment ensures that RDP sessions properly detect network conditions, which can mitigate the freezing issue experienced during login.

2. Disabling UDP for RDP​

Another workaround involved disabling the use of the UDP protocol for RDP connections, forcing the system to rely solely on TCP:

• Open Group Policy Editor: Press Win + R, type gpedit.msc, and press Enter.
• Navigate to the Policy: Go to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Connections.
• Modify Transport Protocols: Enable the policy "Select RDP transport protocols" and set it to "Use only TCP."
• Restart the Server: Restart the server to apply the changes.

Disabling UDP can stabilize RDP sessions, especially in environments where UDP traffic is prone to issues.

3. Uninstalling the Problematic Update​

Some administrators opted to uninstall KB5051987 as a temporary measure:

• Uninstall the Update: Open PowerShell or Command Prompt as an administrator and run wusa /uninstall /kb:5051987.
• Restart the Server: After uninstallation, restart the server.

While this approach can restore RDP functionality, it also removes the security fixes provided by the update, potentially exposing the system to vulnerabilities.

Critical Analysis of Microsoft's Handling​

The RDP freezing issue highlights the challenges inherent in software updates, particularly in complex systems like Windows Server. While security updates are essential, unintended side effects can disrupt critical services. Microsoft's acknowledgment of the problem and the resolution provided for Windows 11 users demonstrate responsiveness. However, the lack of a timely fix for Windows Server 2025 users underscores the need for more robust testing and quicker remediation strategies.
Administrators are advised to stay informed through official Microsoft channels and community forums. Implementing the discussed workarounds can provide temporary relief, but it's crucial to monitor for official patches to ensure both functionality and security.
In conclusion, while the KB5051987 update aimed to enhance security, the resulting RDP freezing issue serves as a reminder of the delicate balance between deploying necessary updates and maintaining system stability. Proactive communication and swift action are vital in mitigating such challenges in enterprise environments.

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Source: www.theregister.com Windows Server 2025 freezing after February patch

 

[ChatGPT]

In February 2025, Microsoft released security update KB5051987 for Windows Server 2025, aiming to enhance system security. However, this update inadvertently introduced a significant issue: Remote Desktop Protocol (RDP) sessions began freezing shortly after connection, rendering mouse and keyboard inputs unresponsive. This problem necessitated users to disconnect and reconnect repeatedly, severely disrupting remote management tasks.

The Emergence of the RDP Freezing Issue​

Following the deployment of KB5051987 on February 11, 2025, administrators reported that RDP sessions on Windows Server 2025 devices would freeze almost immediately after establishing a connection. The primary symptoms included:

• Unresponsive Input: Mouse and keyboard inputs became non-functional within the RDP session.
• Forced Reconnection: Users were compelled to disconnect and reconnect to regain control, leading to operational inefficiencies.

Microsoft acknowledged the issue, stating that after installing the February 2025 Security update (KB5051987) and subsequent updates, users might experience RDP sessions freezing shortly after connection. The company did not provide a specific timeline for a fix, indicating the complexity of the problem.

Parallel Issues in Windows 11 Version 24H2​

A similar issue was observed in Windows 11 version 24H2, where UDP-based RDP sessions would disconnect after 65 seconds when connecting to Windows Server 2016 or earlier. This problem, which began in January 2025, saw a significant increase in reports following the March security update. Microsoft addressed this issue with the release of update KB5053656 on March 27, 2025, recommending users install the latest update to resolve the problem.

Technical Analysis of the RDP Freezing Issue​

The freezing issue in Windows Server 2025 appears to be linked to how the February security update handles input processing within RDP sessions. Potential factors contributing to the problem include:

• Input Handling Disruption: The update may interfere with the session's ability to process keyboard and mouse inputs post-connection, resulting in unresponsive sessions.
• Protocol Alterations: Modifications in networking protocols introduced by the update could have unintended effects on session stability.
• Deep System Integration Faults: The issue might stem from complex interactions between updated security modules and remote session management components, complicating the resolution process.

Impact on Enterprise Environments​

For organizations relying on Windows Server 2025, the RDP freezing issue poses significant challenges:

• Productivity Loss: Administrators face repeated disconnections and reconnections, reducing operational efficiency.
• Operational Risks: Critical tasks requiring stable remote access are jeopardized, potentially leading to broader operational issues.
• Increased Support Burden: IT departments may experience a surge in support requests, diverting resources from other essential activities.

Mitigation Strategies​

While awaiting an official fix from Microsoft, administrators can consider the following interim solutions:

• Uninstall KB5051987: Temporarily removing the problematic update can restore RDP functionality. However, this action may expose systems to security vulnerabilities addressed by the update.
• Modify RDP Port: Changing the default RDP port (3389) to an alternative port has been reported to resolve the issue in some cases.
• Adjust Group Policy Settings: Configuring the "Select network detection on the server" policy to "Enabled" and setting the "Select Network Detect Level" to "Turn off Connect Time Detect and Continuous Network Detect" can mitigate the problem.
• Disable UDP for RDP: Blocking UDP traffic for RDP connections through the Windows Firewall may alleviate the issue, as some users have found success with this approach.

Microsoft's Response and Future Outlook​

As of March 28, 2025, Microsoft has not provided a definitive timeline for resolving the RDP freezing issue in Windows Server 2025. The company has acknowledged the problem and is likely working on a solution, but the complexity suggests that a fix may not be imminent.
This situation underscores the delicate balance between deploying security updates and maintaining system stability. It highlights the importance of thorough testing and phased rollouts to identify and address potential issues before widespread deployment.

Conclusion​

The RDP freezing issue introduced by update KB5051987 in Windows Server 2025 serves as a critical reminder of the challenges inherent in system updates. Organizations must remain vigilant, implementing interim solutions to maintain operational continuity while awaiting official fixes. Engaging with the broader IT community and staying informed through official channels are essential strategies for navigating such disruptions effectively.

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Source: www.theregister.com Windows Server 2025 freezing after February patch

 

[ChatGPT]

In February 2025, Microsoft released security update KB5051987 for Windows Server 2025, aiming to address various vulnerabilities. However, this update inadvertently introduced a significant issue: Remote Desktop Protocol (RDP) sessions began freezing shortly after connection, rendering mouse and keyboard inputs unresponsive. Users were compelled to disconnect and reconnect to regain control, severely disrupting remote management and access workflows. (theregister.com)

The Impact on Windows Server 2025​

The freezing issue primarily affected Windows Server 2025 environments, where RDP is a critical tool for administrators and users managing servers remotely. The problem manifested shortly after establishing an RDP session, leading to unresponsive input devices and necessitating repeated disconnections and reconnections. This not only hampered productivity but also raised concerns about the reliability of Microsoft's update processes.

Similar Issues in Windows 11 Version 24H2​

Interestingly, a parallel issue emerged in Windows 11 version 24H2. Users reported that UDP-based RDP sessions would disconnect after approximately 65 seconds when connecting to Windows Server 2016 or earlier versions. This problem, which began in January 2025, saw a significant uptick following the March security update. Microsoft addressed this specific issue with the release of update KB5053656 on March 27, 2025, recommending users install the latest updates to resolve the problem. (theregister.com)

Microsoft's Response and User Workarounds​

As of late March 2025, Microsoft acknowledged the RDP freezing issue in Windows Server 2025 but did not provide a specific timeline for a fix, indicating the complexity of the problem. In the interim, users and administrators sought alternative solutions to mitigate the impact.

Enabling Network Detection on the Server​

One effective workaround involved enabling network detection on the server:

• Open the Group Policy Editor (gpedit.msc).
• Navigate to:
• Computer Configuration >
• Administrative Templates >
• Windows Components >
• Remote Desktop Services >
• Remote Desktop Session Host >
• Connections
• Locate and enable the policy "Select network detection on the server."
• Set the "Select Network Detect Level" to "Use both Connect Time Detect and Continuous Network Detect."
• Apply the changes and restart the Remote Desktop Services.

This adjustment helped some users restore stable RDP functionality. (learn.microsoft.com)

Disabling UDP for RDP Sessions​

Another approach was to disable the use of the UDP protocol for RDP sessions, forcing the connection to rely solely on TCP:

• Open the Group Policy Editor (gpedit.msc).
• Navigate to:
• Computer Configuration >
• Administrative Templates >
• Windows Components >
• Remote Desktop Services >
• Remote Desktop Session Host >
• Connections
• Enable the policy "Select RDP transport protocols."
• Set the "Select Transport Type" to "Use only TCP."
• Apply the changes and restart the server.

This method proved effective in preventing session freezes related to UDP transport issues. (woshub.com)

Broader Implications and Microsoft's Update Strategy​

The recurrence of such issues following security updates raises questions about Microsoft's quality assurance processes. While the company aims to enhance security and functionality through regular updates, the unintended consequences observed in this instance highlight the need for more rigorous testing, especially for critical services like RDP.
For organizations relying heavily on remote access, these disruptions underscore the importance of implementing robust update management strategies, including thorough testing in controlled environments before widespread deployment.

Conclusion​

The RDP freezing issue introduced by update KB5051987 in Windows Server 2025 serves as a cautionary tale about the complexities of software updates. While Microsoft's prompt acknowledgment and the community's proactive workarounds provided temporary relief, the situation emphasizes the necessity for meticulous update testing and the development of contingency plans to maintain operational continuity in the face of unforeseen software issues.

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Source: www.theregister.com Windows Server 2025 freezing after February patch

 

[ChatGPT]

Windows Server 2025 recently encountered a significant issue that has drawn widespread concern among IT administrators and enterprise users. Shortly after the release of a February 2025 security update—KB5051987—many Windows Server 2025 systems began exhibiting a critical malfunction: Remote Desktop Protocol (RDP) sessions freeze soon after connection, rendering keyboard and mouse inputs unresponsive. This freeze effectively leaves remote administrators unable to interact with their sessions without disconnecting and reconnecting repeatedly, impacting productivity and operational continuity in environments heavily reliant on remote server management.

The Core Problem: Remote Desktop Freezing​

The issue came to light following the installation of KB5051987, which was deployed on February 11, 2025, as part of Microsoft’s regular security hardening efforts for Windows Server 2025. The patch, while intended to bolster security, inadvertently introduced a bug affecting the Remote Desktop subsystem. The freezing typically occurs shortly after a Remote Desktop session begins, where all user input—mouse movements and keyboard strokes—becomes unresponsive. To regain control, users must disconnect the session and reconnect, only to potentially face the freeze again at a later point.
This behavior is particularly troubling because Remote Desktop services are fundamental for managing server infrastructure, conducting maintenance, monitoring, and troubleshooting in virtually every enterprise. The freeze interrupts these core operations, risking delays and operational downtime.

Technical Insights and Similarities to Past Issues​

The root cause appears linked to interactions between the new security enhancements and internal Remote Desktop session management protocols. Microsoft has acknowledged the fault in its Windows Release Health Dashboard but has not yet provided a definitive timeline for a permanent fix specifically tailored to the Windows Server 2025 environment.
A notable parallel exists with a recent Remote Desktop-related bug in Windows 11 version 24H2. That issue involved UDP-based Remote Desktop sessions disconnecting precisely after 65 seconds when connecting to older servers such as Windows Server 2016 or earlier editions. Microsoft addressed that problem with an optional update released on March 27, 2025 (KB5053656), which mitigated disconnections for Windows 11 users. However, the freezing problem on Windows Server 2025 is more severe, causing full session lock-ups rather than just disconnections and affecting newer server architectures. Despite similarities, the Windows Server 2025 bug seems more complex and elusive, requiring further investigation and broader patching cycles before resolution.

Enterprise Impact and Operational Challenges​

For enterprises relying on Windows Server 2025, the Remote Desktop freeze imposes several operational challenges:

• Loss of Remote Control: Administrators lose the ability to remotely manage critical systems effectively, potentially delaying updates, security fixes, and troubleshooting.
• Interrupted Workflows: The need to disconnect and reconnect dozens or even hundreds of sessions disrupts workflows, heightens user frustration, and increases help desk tickets.
• Security vs. Stability Dilemma: While security patches are vital to protect against vulnerabilities, the risk of destabilizing core remote access functionality forces organizations to balance urgency with operational reliability.
• Potential for Data Loss: In situations where active remote work is interrupted without proper session saving or state preservation, data or configuration changes risk being lost.

Workarounds and Interim Solutions​

While waiting for an official fix, IT professionals have adopted several interim measures to mitigate the impact:

• Disconnect and Reconnect: The simplest short-term approach is to disconnect frozen sessions and re-establish new Remote Desktop connections.
• Monitor Update Versions: Verify that servers have installed KB5051987 or subsequent updates and remain alert to any new patches or advisories from Microsoft.
• Known Issue Rollback (KIR): For enterprise-managed devices, deploying Microsoft's Known Issue Rollback can help revert the problematic changes introduced by critical updates. This emergency patching mechanism allows temporary mitigation without fully uninstalling security patches.
• Alternative Access Management: When Remote Desktop freezes make remote access impossible, administrators may use alternative management tools, such as out-of-band management interfaces, local console access, or other remote management protocols, to maintain server control.
• Rigorous Testing: Organizations are advised to test upcoming patches in controlled, non-production environments before mass deployment to prevent widespread disruption.

Broader Lessons and Reflections​

This Windows Server 2025 Remote Desktop freezing incident reflects the perennial challenge in enterprise IT of balancing rapid security updates with maintaining system stability and usability. Several key takeaways emerge:

• Complex Interdependencies: Modern operating systems involve deeply interconnected components—security hardening in one area may unintentionally disrupt protocols critical to remote connectivity.
• Limitations of Pre-release Testing: Despite Microsoft’s extensive testing pipelines, real-world environments with diverse configurations can reveal edge cases and incompatibilities missed in development labs.
• The Need for Incremental Rollouts: Gradual update deployments with robust monitoring can help catch issues early, preventing enterprise-wide outages.
• Importance of Community and Communication: User forums, such as WindowsForum.com, alongside formal Microsoft communication channels, play vital roles in disseminating information, sharing workarounds, and fostering collaborative troubleshooting.
• Resilience and Preparedness: IT teams must maintain contingency plans including alternative access methods, rollback strategies, and monitoring tools to reduce the fallout when patches misfire.

Anticipated Microsoft Response and Future Outlook​

Microsoft’s historical agility in addressing similar RDP issues—such as the Windows 11 24H2 disconnection bug—offers cautious optimism that a resolution will arrive. However, the Windows Server 2025 incarnation’s complexity suggests that Microsoft may take additional time to thoroughly vet fixes across diverse server setups to avoid introducing further instability.
Administrators and organizations are encouraged to:

• Stay vigilant for Microsoft’s official patch notes and advisories.
• Subscribe to update health dashboards and IT news outlets for breaking developments.
• Participate in community forums to share insights and best practices.
• Continue prioritizing robust testing before production rollouts.

Conclusion​

The freezing of Remote Desktop sessions on Windows Server 2025 following the February 2025 security update KB5051987 starkly illustrates how even essential security patches can inadvertently disrupt critical enterprise functions. As Windows Server underpins countless business operations worldwide, this incident serves as a reminder of the delicate balance required in software maintenance: safeguarding security without sacrificing stability.
While workarounds such as session reconnections and rollback policies offer temporary relief, the onus remains on Microsoft to deliver a comprehensive fix. Meanwhile, IT professionals must navigate the challenges with cautious vigilance, adaptive strategies, and active engagement in knowledge-sharing communities.
In the fast-evolving landscape of enterprise IT, episodes like this embody both the promise and pitfalls of continuous software improvement—where resilience is built through collaboration, preparedness, and incremental progress.
For ongoing updates and community support related to this issue, Windows Server administrators are advised to monitor official Microsoft resources and exchange experiences on tech forums like WindowsForum.com to stay informed and ready.

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Source: https://www.theregister.com/2025/03/28/windoers_server_2025_freezing/%3Ftd=keepreading/

 

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Microsoft's recent patching history for Windows has been marked by a flurry of disruptions, particularly revolving around Remote Desktop Protocol (RDP) sessions—a core feature in enterprise IT for remote management and work. The latest episode involves a critical freezing bug affecting Windows Server 2025 following a February 2025 security update, causing RDP sessions to become unresponsive to mouse and keyboard input shortly after connection. This issue, alongside a similar but distinct set of challenges affecting Windows 11 24H2, underscores the growing complexity and risks in patch deployment and system stability for Microsoft's operating systems.

The Remote Desktop Freeze in Windows Server 2025​

In February 2025, Microsoft released security update KB5051987 aimed at strengthening Windows Server 2025’s security posture. Shortly after installation, users—especially IT administrators relying on remote server management—began reporting a serious problem: Remote Desktop sessions would freeze just moments after being established. The symptoms were consistent and vexing: the interface remained active visually, but mouse and keyboard inputs were completely unresponsive. The only known temporary remedy was to manually disconnect and reconnect the session, resulting in repetitive workflow interruptions and significant productivity loss across enterprises.

Tracing the Bug’s Origin and Impact​

This freezing issue appears linked to conflicts introduced by security hardening measures incorporated in KB5051987. While Microsoft has not publicly dissected the exact technical cause in detail, the freezing is believed to result from changes in how Remote Desktop components handle input data over RDP sessions. When the patch is applied, certain Remote Desktop session management protocols malfunction, causing a session lock-up that partially disables key system functions.
The implications for enterprise-scale IT are profound. Remote Desktop is a crucial tool for managing servers, performing maintenance, and responding to incidents remotely. The unpredictability of frozen sessions jeopardizes operational continuity, especially in environments demanding high availability. Recurrent disconnects and reconnections waste valuable administrative time while increasing the risk of error or data loss.
Curiously, while the Windows Server 2025 bug renders sessions fully frozen, a related but distinct problem afflicted Windows 11 24H2 released earlier. Windows 11 users experienced frequent RDP disconnections occurring around 65 seconds into UDP-based remote sessions, particularly when connecting to older server versions such as Windows Server 2016. Fortunately, Microsoft resolved this related issue with an optional March 27, 2025 update (KB5053656), but the server freeze remains unresolved as of now.

Microsoft’s Response and KB5055523 Patch​

After more than a month of community complaints and administrative headaches, Microsoft issued a patch (KB5055523) in late April 2025 to address the freezing problem on Windows Server 2025. The update, strongly recommended for immediate installation, promises to restore Remote Desktop session responsiveness by fixing the underlying input freeze bug. Windows 11 users had their RDP freezing woes addressed earlier by a different update (KB5052093).
Notably, this latest fix is separate from another recent patch addressing unrelated stability issues, such as Blue Screens of Death (BSODs) on Windows 11. That earlier BSOD patch was delivered using the Known Issue Rollback (KIR) mechanism, a service Microsoft uses to reverse problematic updates without requiring full uninstall. KIR has proven useful, especially for rapidly mitigating widespread patch problems, but it does not appear to have been applied for the RDP freezing fix on Server 2025.

The Broader Context: Patch Break-Patch Cycles and System Stability​

This episode serves as a vivid example of the growing pains Microsoft faces in balancing rapid security patching with operational stability. Since early 2025, the company has been grappling with several notable patch-induced regressions, including:

• Erroneous error messages confusing users.
• Software defects causing USB-connected printers to output garbled, nonsensical print jobs.
• Updates inadvertently offering Windows 11 installations to users under corporate policies designed to prevent such upgrades—a situation Microsoft attributed to a “latent code issue.”

Such recurring issues have sparked frustration in the IT community, with commentators sarcastically suggesting that Microsoft should allocate more resources to “fixing things that all the other departments broke.” The relentless patch-break-patch cycle undermines confidence and often leaves sysadmins caught in a whirlwind of crisis aversion rather than proactive management.

Technical and Operational Lessons​

From a technical standpoint, the Windows Server 2025 freeze reveals several important lessons and broader trends:

• Interdependency Complexity: Operating system components, particularly those managing remote connectivity and input, are deeply intertwined. Security fixes targeting one area can inadvertently disrupt others, especially legacy or complex subsystems like RDP.
• Limitations of Pre-release Testing: Despite Microsoft’s extensive testing procedures, real-world environments reveal edge cases and interactions within diverse infrastructures that are hard to simulate fully during development.
• Urgency vs. Stability: The cybersecurity landscape demands rapid delivery of patches to fix vulnerabilities. However, accelerated rollouts can sometimes sacrifice thorough quality assurance, leading to regressions.
• Importance of Workarounds and Communication: IT teams need robust communication channels both internally and with vendors. Immediate workarounds (like disconnect-reconnect cycles or fallback to alternative remote access tools) are critical stopgaps while permanent fixes are developed.
• Value of Known Issue Rollback (KIR): KIR provides a mechanism to undo problematic patches on client systems. Its usage in other recent update failures highlights its utility, though it’s not a universal fix.

Recommendations for IT Professionals​

Given the challenges, IT administrators managing Windows Server 2025 environments should adopt several best practices:

• Test Updates in Staging Environments: Before wide deployment, updates should be thoroughly tested in controlled labs mimicking production to catch potential issues early.
• Monitor Official Health Dashboards: Microsoft’s Windows Release Health Dashboard and support forums provide timely info on known issues and interim fixes.
• Maintain Backup and Recovery Plans: Robust backup strategies ensure rapid recovery should updates impact system stability.
• Communicate End-User Expectations: Inform users about potential issues with remote sessions and recommended workarounds during the interim period.
• Consider Alternative Access Tools: Third-party remote access solutions may serve as contingency options when native RDP is unreliable.

Looking Ahead: Stability and Innovation in Balance​

Microsoft’s fix for the RDP freezing bug on Windows Server 2025 is a welcome relief but also a reminder of the inherent tension in today’s software maintenance. The need to secure ever-more complex systems creates an environment where patches can introduce new issues, especially in mission-critical enterprise contexts.
Going forward, Microsoft and the broader tech industry face the challenge of enhancing pre-deployment testing rigor, enabling incremental rollouts that allow observation of patch impact at scale, and refining rollback and mitigation strategies to minimize user disruption.
There is cautious optimism based on Microsoft's recent quick resolution of the Windows 11 24H2 RDP disconnect problem, suggesting that similar persistence and focus can resolve the Server 2025 freeze fully and promptly. Meanwhile, the Windows community—from IT professionals to enthusiast forums—continues to play a vital role in sharing knowledge, workarounds, and feedback that help manage today’s patching realities.

Conclusion​

In summary, the Windows Server 2025 Remote Desktop freeze caused by the February 2025 KB5051987 update and addressed by the April 2025 KB5055523 patch reflects the complexities of modern OS security and stability. While patches are essential for protection against vulnerabilities, the risks of disruption are real and impactful, particularly for critical enterprise operations. This case highlights the pressing need for rigorous update testing, clear communication, and agile contingency planning. As Microsoft strengthens its response capabilities and patch quality controls, IT professionals must stay vigilant and adaptable to navigate the evolving Windows update landscape.
The continuous dialogue and collaboration within user communities, including platforms like WindowsForum.com, remain invaluable in mitigating issues and driving improvement in Windows ecosystem reliability.

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Source: Microsoft fixes Server 2025 Remote Desktop freezing issues