June Patch Tuesday Update Breaks Windows Server DHCP
Critical bug disrupts Windows Server DHCP service
Key Takeaways:
- Microsoft’s June 2025 Patch Tuesday update introduced a bug that can break the DHCP service on Windows Server.
- The issue prevents some clients from renewing their IP addresses.
- There’s currently no official fix or workaround besides rolling back the patch.
Microsoft’s June 2025 Patch Tuesday update introduced a bug that can break the DHCP service on Windows Server versions 2016, 2019, 2022, and 2025. On the support page for KB5060842 (OS Build 26100.4349), Microsoft notes as a known issue:
The DHCP Server service might intermittently stop responding after installing this security update. This issue affects IP renewal for clients.
Microsoft says that its working on solving the problem ‘in the coming days’ and will provide more information when it’s available.
The issue prevents some clients from renewing their IP addresses, which can lead to network connectivity problems. While the bug doesn’t appear to affect all users, if a client is unable to renew its IP address, then it could lose connectivity to the network.
As there’s currently no official fix or workaround, if it is affecting your organization you’ll have to roll back the update. And that’s worrying because the latest cumulative update for Windows Server includes important security updates.
Russell Smith, the Editorial Director at Petri IT Knowledgebase, has over two decades of hands-on experience in IT, in both small business settings and government IT infrastructure projects. Russell started writing for Windows IT Pro Magazine in t...
