domain controllers

Microsoft released a cumulative update for Windows 11 (version 24H2) on September 9, 2025 — KB5065426 (OS Build 26100.6584) — that bundles security fixes, servicing-stack improvements, and a slate of consumer and enterprise features while also tightening several hardening timelines that...

Microsoft’s security advisory for CVE-2025-53809 warns that improper input validation in the Windows Local Security Authority Subsystem Service (LSASS) can be abused by an authorized attacker to cause a denial of service (DoS) over a network, putting authentication services and domain...

A subtle but dangerous bug in Windows Server 2025’s Schema Master FSMO role is causing duplicate schema entries that can break Active Directory replication and trigger schema-mismatch errors on older domain controllers — the issue is being discussed by administrators and reported in the field...

August 12’s cumulative rollup for Windows Server 2022 (KB5063880, OS Build 20348.4052) is a pivotal update that continues Microsoft’s multi-year campaign to harden identity and boot integrity in Windows environments—most notably by reinforcing the Microsoft RPC Netlogon protocol against...

Microsoft’s August Patch Tuesday delivered a heavy-duty security package this month — industry tallies vary between 107 and 111 vulnerabilities, including a publicly disclosed Kerberos elevation-of-privilege issue (CVE‑2025‑53779) and roughly a dozen other critical remote‑code‑execution (RCE)...

Microsoft’s security advisory confirms a new Kerberos vulnerability — CVE-2025-53779 — described as a relative path traversal flaw in Windows Kerberos that can be abused by an authorized attacker over a network to elevate privileges, and organizations that rely on Kerberos-based authentication...

SafeBreach Labs’ disclosure of four newly discovered Windows denial-of-service (DoS) flaws — and the novel “Win‑DDoS” technique they describe for turning exposed domain controllers into DDoS amplifiers — forces a hard look at how organizations harden their identity plane, patch critical servers...

A new class of Windows denial-of-service attacks revealed at DEF CON has forced a hard reckoning for enterprise defenders: vulnerabilities in LDAP handling can not only crash individual servers, they can be chained into zero-click attack flows that target Domain Controllers (DCs) and potentially...

Here is a summary of the situation based on your provided article and corroborated by reputable sources: Issue: Windows Server 2025 domain controllers could become unreachable after a restart. Cause: After reboot, the server incorrectly applies the default firewall profile rather than the...

For administrators and IT departments relying on Windows Server domain controllers, recent months have been marked by a tense waiting game following a critical network issue that affected the accessibility and reliability of Windows Server 2025 systems. Affected installations faced sudden...

When Microsoft's monthly security updates promise stronger defenses, IT professionals and organizations worldwide often breathe a sigh of relief. Yet, as the April 2025 security updates reached Windows Server platforms, a ripple of concern spread through enterprise environments. The update...

Cybercriminals are no longer simply interested in encrypting a few desktops in an organization; they’re laser-focused on the true crown jewels of enterprise IT—the Active Directory (AD) Domain Controllers. Recent warnings from Microsoft and data reviewed across the IT security landscape reflect...

Microsoft’s history with Windows updates has often been punctuated by instances where critical security patches—introduced to defend against real-world threats—have triggered unexpected issues in enterprise environments. The April 2025 Patch Tuesday release is one such event, and its fallout has...

Windows Server 2025, Microsoft’s much-anticipated enterprise server platform, has been on the receiving end of significant attention—though not always for positive reasons. While the operating system brings an array of security advancements, hybrid cloud integrations, and ambitious AI-capable...

Problems facing IT administrators are as perennial as the operating systems they manage, but few things send a chill through the enterprise like a Windows Server authentication failure precipitated by a routine update. Windows Server, the backbone of IT infrastructure for countless organizations...

Microsoft has issued a critical warning concerning a significant bug in Windows Server 2025, specifically affecting domain controllers running the Active Directory Domain Services (AD DS) role. This bug manifests after a system restart, where the domain controllers fail to apply the correct...

Windows Server 2025 has encountered a serious and disruptive issue impacting domain controllers specifically during system restarts. After rebooting, these servers may fail to apply the appropriate domain firewall profile and instead load the standard or public firewall profile. This...

Windows Server 2025 administrators and IT professionals are currently grappling with a critical and nuanced issue that has emerged following the installation of recent updates, particularly surrounding domain controllers and Remote Desktop Protocol (RDP) sessions. This problem has multifaceted...

Windows Server 2025, Microsoft's latest server operating system, is currently facing a significant challenge that has drawn the attention of IT administrators and enterprise network managers worldwide. A critical bug has been identified involving the domain controllers—the pivotal servers tasked...

Windows Server 2025, the latest iteration of Microsoft's server operating system, has encountered a significant challenge shortly after its release. A critical bug affecting domain controllers has emerged, primarily concerning the handling of network profiles following a system restart. This...