Reports and Microsoft’s own documentation indicate that Windows 11’s most recent two cumulative updates KB5015882 and KB5015814, have caused serious problems for certain users.
Due to an operating system problem, the Start menu could disappear as soon as you try to open it with the newest versions.
The most recent optional Windows 11 update (KB5015882) added a new notification function. When the attention assist feature is activated, you can now receive urgent alerts. Windows 10 has a feature called “Focus Assist,” which is comparable to “Do Not Disturb.”
Additionally, during the OOBE, users will be able to upgrade to a newer version of Windows 11. Updates can be installed at system startup, but only if your device qualifies for the newer version at that time. KB5015882 appears to be a great upgrade on paper, but some users have reported that the Start menu is broken.
The number of reports showing that the Start menu has serious flaws is growing steadily. When we pressed the Start button, we were unable to bring up the Start menu as expected. To put it another way, for certain users, the Start menu has vanished as a result of the upgrade.
Issues with KB5015882 and KB5015814 for Windows 11
The problem also affects your keyboard’s ‘Windows’ key. Fortunately, Microsoft has been made aware of the allegations and has discreetly confirmed that a bug in KB5015814 or KB5015882 affects a “limited number of machines” where users cannot open the Start menu.
The Start button or the Windows key on your keyboard may have no impact on affected PCs.
Even though Microsoft has already sent an emergency server-side update to fix the faulty Start menu, it may take up to 24 hours for it to instantly propagate to all devices in use. If your device’s Start button is still not working, try rebooting Windows to see if it helps apply the update more quickly to your device.
Computer Configuration > Administrative Templates > KB5014668 220721 04201 Known Issue Rollback > Windows 11 is where enterprise customers will locate the special group policy.