Tag Archive for: Patch Tuesday

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June Windows Server Update Causing DHCP Problems—Here’s What You Need to Know

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If you manage Windows servers, there’s a new update you might want to hold off on. Microsoft’s June 10 Patch Tuesday release is causing DHCP issues in some environments, and the impact isn’t small.

Admins have started noticing that after installing the update, DHCP services can stop renewing IP addresses correctly. That means devices—such as laptops, printers, and phones—can lose their connection to the network without warning. No internet. No internal systems. Just dropped.

So far, it’s been confirmed on several Windows Server versions: 2016, 2019, 2022, and even the 2025 preview build. The issue doesn’t hit every system, but when it does, it hits hard.

What’s Causing DHCP Failures in the June Windows Server Update?


DHCP typically runs quietly in the background, assigning IP addresses so that devices can connect. But after this update, some servers are failing to renew those addresses, leaving devices without a way to get back online.

Microsoft has acknowledged the issue and says they’re working on a fix. But as of now, there’s no patch or ETA.

How to Prevent Windows DHCP Issues After Patch Tuesday


If you haven’t installed the update yet, the best move may be to wait. And if you already have, here are a few steps to help stay ahead of any network trouble:

  • Monitor DHCP logs to catch renewal failures early.
  • Have a rollback plan ready in case devices start falling off the network.
  • Test updates in a safe environment before pushing them to production.
  • Pause additional patching if you’re seeing issues on any servers already updated.

Monitor DHCP logs to catch renewal failures early.
Have a rollback plan ready in case devices start falling off the network.
Test updates in a safe environment before pushing them to production.
Pause additional patching if you’re seeing issues on any servers already updated.

How DHCP Outages Can Disrupt Your Network


When DHCP breaks, it can feel like the whole network is down—even if it’s not. Devices can’t connect. Users get kicked off. Support tickets start piling up fast. And the cause isn’t always obvious until you dig into the logs.

That’s why this patch is getting attention. It’s not flashy, but it quietly knocks systems offline—especially if you’re not looking for it.

Need Help Troubleshooting DHCP or Windows Server Issues?


If you’re already experiencing problems or aren’t sure what to do next, Epoch IT can help you sort it out. We’ll take a look at your setup, help assess the risk, and figure out the best plan—whether that’s holding, rolling back, or just keeping a closer watch.


Microsoft Confirms DHCP Failures in June 2025 Windows Server Update

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June 29, 2025 — If you’ve installed Microsoft’s latest Patch Tuesday update for Windows Server and are suddenly seeing devices drop off your network, DHCP might be the culprit.

After rolling out the June 10 update, some IT teams noticed their servers stopped renewing IP addresses. Devices that had been connecting without issue—whether laptops, printers, or phones—can abruptly lose access to the network. No alerts, no errors, just a sudden drop-off.

The issue affects multiple versions of Windows Server, including 2016, 2019, 2022, and even the preview build of 2025. Microsoft has confirmed the bug and says they’re working on a fix. However, for now, there’s no patch available to resolve the issue.

What’s Causing the DHCP Failures in Windows Server?


Normally, DHCP runs quietly in the background, assigning IP addresses so devices can communicate. But after this update, some servers aren’t doing their job correctly. Devices that need to renew their IP address simply don’t receive one. And when that happens, they lose connection entirely.

It’s not impacting every system. Some environments appear to be fine, while others are severely affected. That inconsistency makes the problem tough to predict.

What IT Teams Can Do About the June 2025 Windows Server Issue


If you haven’t installed the update yet, the best move may be to wait. If you already have, here are a few steps to stay ahead of network trouble:

  • Monitor DHCP logs closely to catch renewal failures early.
  • Have a rollback plan ready in case devices start dropping off the network.
  • Test updates in a safe, staging environment before pushing them to production.
  • Pause additional patching if you see issues on any servers that have already been updated.

Why the DHCP Bug in This Update Matters


When DHCP stops working, it’s not a small problem. Other systems might appear fine, but users can’t connect. That leads to support tickets, downtime, and frustration.

This incident serves as a clear reminder of why staged rollouts and patch testing are crucial. Even routine Windows updates can cause real trouble if something slips through.

Need Help Navigating the Windows Server Update Problem?


If you’re experiencing issues or aren’t sure if this patch is safe for your environment, Epoch IT is ready to help. We can review your setup, identify what’s affected, and guide you through the safest next steps.