Microsoft's June 2025 security updates have introduced a significant issue affecting the Dynamic Host Configuration Protocol (DHCP) Server service on various Windows Server versions. Administrators have reported that post-update, the DHCP service intermittently freezes, leading to disruptions in IP address renewals for network clients.
The affected Windows Server versions and their corresponding updates are:
- Windows Server 2016 (KB5061010)
- Windows Server 2019 (KB5060531)
- Windows Server 2022 (KB5060526)
- Windows Server 2025 (KB5060842)
This development underscores the critical role of the DHCP Server service in network management. By automating the assignment of IP addresses and other network configurations, DHCP reduces administrative overhead and ensures reliable IP address configuration across Windows networks. Disruptions in this service can lead to significant network connectivity issues, affecting both end-users and enterprise operations.
Administrators are advised to monitor Microsoft's official channels for updates and consider delaying the deployment of the June 2025 security updates on critical systems until a fix is released. Implementing temporary workarounds, such as manually assigning IP addresses or using alternative DHCP solutions, may help mitigate the impact in the interim.
This incident highlights the importance of thorough testing and validation of security updates in diverse environments to prevent unintended disruptions to essential services.
Source: BleepingComputer Microsoft: June Windows Server security updates cause DHCP issues
