Hello David Z,
Has anyone configured a group policy WSUS settings and can confirm the install are fully controlled by the end user?
In my opinion, the actual installation and restart schedule don't depend on the WSUS server. There is such a active hours. The computer will try to install the updates and restart the computer out of the active hours if the user didn't logon.
Please try to the apply the below gpo to configure the active hours:
In addition, please provide the below registry value for reference:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
Regards,
Rita
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