Microsoft has issued an emergency update to fix the Start Menu issue that some Windows 11 users face after installing recent updates.

“A small number of devices are unable to open the Start menu after installing updates released June 23, 2022 or later. After installing KB5014668 or later updates, we have received reports that a small number of devices might be unable to open the Start menu. On affected devices, clicking or selecting the Start button, or using the Windows key on your keyboard might have no effect,” Microsoft explained.

To fix the problem, Microsoft used Known Issue Rollback (KIR). KIR is a Windows capability that helps undo buggy Windows non-security fixes delivered through Windows Update.

It is important that IT administrators install and configure a specific KIR Group Policy associated with the Windows version of the system.

“The special Group Policy can be found in Computer Configuration – > Administrative Templates -> KB5014668 220721_04201 Known Issue Rollback – > Windows 11 (original release),” Microsoft added.

To implement a Known Issue Rollback via Group Policy, users can navigate to the Local Computer Policy or the Domain policy on their domain controller using the Group Policy Editor to choose the Windows version they want to target.

The sources for this piece include an article in BleepingComputer.