Windows Update – Install now button grayed out

One of our Windows 10 clients wasn’t able to install downloaded Windows updates from the WSUS server.

No matter if a user or admin logs on to the machine the Windows Update – Install now button is always grayed out. Although this client is receiving updates from the WSUS server, users should be able to manually install downloaded updates.

Windows Update - Install now

In order to install updates, I had to delete the registry key that was defined through Group Policy.

Open Registry editor and navigate to the following key:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Windows Update\AU

Delete the contents of the AU key from the right pane.

After a couple of minutes, you should see updates started installing. Once the system is restarted, the AU key will be recreated from the Group Policy.

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