Windows 11 automatically restarting after install security Update — With GPO and WSUS.

Hi everyone,

I’m facing a strange behavior with Windows 11 devices that receive updates through WSUS and are fully managed via Group Policy. Here’s the scenario:

We have a GPO configured as follows:

-Configure Automatic Updates → 4 (Auto download and schedule the install)

-Scheduled installation every day at 10:00 

-Install during automatic maintenance → disabled

-Active Hours configured

-Turn off auto-restart for updates during active hours → Enabled

-Update deadlines set to 0 (to avoid any forced restart)
-No other restart-related policies set in the domain

Even with this configuration, after updates are installed, Windows 11 shows the following message:

“Your organization manages update settings. We will restart and install this update at X minutes.”

And then the device automatically restarts, even when:

-a user is logged in

-it is outside Active Hours

-deadlines are disabled
-no-auto-restart is enabled

This behavior does not happen on Windows 10 — only on Windows 11.