Windows 10's May update contains a bug that can cause installation failure and automatic repair loops, particularly affecting devices with Intel vPro processors.
Microsoft has released an emergency fix, KB5061768, to address the issue, which must be manually installed.
To avoid problems, users with Intel vPro chips should pause the May update installation and apply the emergency patch.
The bug stems from a termination issue with lsass.exe, prompting repeated failed attempts to install the update and potentially leaving users locked out of their PCs.
For users already impacted, disabling Intel Trusted Execution Technology in the BIOS may resolve the issue, allowing for successful system restart.
Device Encryption or BitLocker users may need their recovery key to navigate recovery screens caused by the bug.
Windows 11 users are also advised to be cautious when upgrading, as clean installs automatically apply Device Encryption, which ties encryption recovery keys to Microsoft accounts.
Deployment of Microsoft's emergency fix and vigilance in applying updates can help avoid potential technical complications and data loss.