This Windows 11 Update May Make Your PC Repeatedly Restart

In a recent turn of events, a non-security update for Windows 11 has brought a problematic side effect that has many IT departments scrambling: it causes some PCs to aggressively and repeatedly restart.

The Update’s Original Intent

The update was intended to bring several quality-of-life improvements and bug fixes to Windows 11, such as resolving issues with the Snipping Tool and the "Safely Remove Hardware" feature. These updates were part of Microsoft's regular efforts to refine user experience and address minor glitches.

However, after installation, the update has led to severe issues, particularly for systems utilising virtual machine tools like CloudPC, Azure Virtual Desktop, and DevBox. Affected PCs enter an infinite restart loop, creating significant disruptions for users who rely heavily on these virtualisation tools.

While most home users might not notice significant disruptions, businesses and power users who depend on virtual machines are at high risk. This can be particularly concerning for business leaders who rely on their internal IT staff or outsourced IT companies to keep systems running smoothly. The unexpected downtime can affect productivity and lead to costly interruptions.

The Importance of Proactive Patch Testing

This incident highlights the critical need for robust patch testing before wide deployment. Engaging an outsourced company to conduct thorough testing can help catch potential issues early, ensuring updates do not disrupt essential operations. This approach can save time and resources by identifying bugs in a controlled environment, thus maintaining business continuity.

Steps to Resolve the Issue

If your systems are affected by the KB5039302 update, consider the following steps:

1. Recovery Mode: Use Windows recovery options to revert to a previous system state.
2. Uninstall the Update: Navigate to the "Windows Update" settings and uninstall the KB5039302 update.
3. Pause Updates: Temporarily pause updates to prevent the problematic update from reinstalling.

We’re Here to Help

If you're facing issues due to this update or need advice on managing future updates, our team is ready to assist. We provide tailored support to ensure your systems remain secure and operational, helping you navigate any challenges that arise. Reach out to us for expert guidance and support.