Microsoft has confirmed a new issue affecting Windows Server systems following the rollout of its June 2025 Patch Tuesday security updates. The problem, acknowledged over the weekend, causes the DHCP Server service to freeze, disrupting IP address renewals and impacting network connectivity in enterprise environments.
What Is the DHCP Server Service?
The Dynamic Host Configuration Protocol (DHCP) Server service is critical to Windows Server operations. It automates the assignment of IP addresses and network configurations to client devices, ensuring:
- Efficient network management
- Reduced manual configuration errors
- Reliable IP assignment across enterprise networks
When the DHCP service fails, devices on the network may lose internet connectivity, creating serious disruptions in business operations.
What Is the Issue with June 2025 Windows Updates?
According to Microsoft, the DHCP Server service may intermittently stop responding after installing the following June 2025 cumulative updates:
- Windows Server 2016 – KB5061010
- Windows Server 2019 – KB5060531
- Windows Server 2022 – KB5060526
- Windows Server 2025 – KB5060842
“This issue affects IP renewal for clients,” Microsoft stated in an update to its Patch Tuesday security advisory. Affected systems fail to properly renew unicast IP addresses, potentially rendering devices unable to maintain network connectivity.
Microsoft’s Response and Fix Timeline
Microsoft is actively investigating the issue and confirmed that a fix is in development:
“We are working on releasing a resolution in the coming days and will provide more information when it is available,” the company said.
Admins are advised to monitor Microsoft’s official health dashboard and advisories for a resolution or possible workarounds.
Related Windows Server Issues Fixed in Recent Updates
The June 2025 cumulative updates also addressed:
- Authentication problems introduced by April 2025 updates on Windows Server domain controllers
- A bug that made Windows Server 2025 domain controllers unreachable after restarts
- Out-of-band fixes in May 2025 for Hyper-V VMs (Windows 10, 11, and Server) freezing or restarting unexpectedly
- An April 2025 emergency update that resolved Windows container launch failures under Hyper-V isolation on:
- Windows Server 2019
- Windows Server 2022
- Windows Server 2025
Recommendations for IT Admins
- Avoid applying the June updates on production DHCP servers until a patch is released
- Monitor affected environments for DHCP service freezing or IP address renewal issues
- Consider using manual IP address configuration as a temporary workaround where applicable
- Stay updated through Microsoft’s Windows Health Dashboard and support channels
