The first security update for Microsoft’s Windows 11 operating system in 2026 caused two critical issues: first, some computers were unable to shut down, and second, some users were unable to log in via Remote Desktop. Microsoft has now released emergency updates to fix these problems.
These updates are off-peak, meaning they were released outside of the scheduled timeline, and are now available through Windows Update. If your computer started freezing during shutdown, failed to enter hibernation, or refused to log in remotely after the last security update, installing the emergency update is the fastest way to restore stability to your device.
Emergency Updates to Install
Microsoft has released two off-peak updates, KB5077744 and KB5077797, and is distributing them through Windows Update.
These updates address two specific issues. First, Windows 11 version 23H2 devices with Secure Boot enabled might fail to shut down or enter hibernation. Second, remote access applications experienced connectivity and authentication failures across multiple platforms, including Windows 11 version 25H2, Windows 10 version 22H2 ESU, and Windows Server 2025.
Why are these errors so serious?
A shutdown failure is no small matter, and the remote desktop issue poses a significant risk. Many people rely on remote access for work, troubleshooting, and switching between devices, so a login failure could completely disrupt their workday.
This incident comes at a critical time, as it’s the first Windows 11 update of 2026 and was released with issues that should have been detected beforehand. The Windows Insider Program is designed to identify bugs before release, yet even serious problems like this managed to slip through.
What to watch for next:
If you are affected, check for Windows updates and install the emergency patches as soon as they become available. After installation, your computer should shut down properly, and remote desktop login should function normally.
If you’re not affected, don’t panic, but pay attention to how quickly this happens. A short cooldown period before installing completely new updates can help you avoid the worst surprises, especially when it comes to core features.
For now, the practical bottom line is simple: update, make sure the shutdown works, and then get back to work.
