I recently took my WSUS server offline. In the mean time I want the clients to update from the internet until I get WSUS up again.

However, Windows Updates is tring to contact the old server and (obviously) failing to get new updates.

• I have updated the WSUS GPO to disabled.
• Checked DNS is resolving.
• Deleted WSUS GPOs.
• GPRESULT reports that policy is not being applied
• Run GPUPDATE /force
• No issues reported from DCDIAG

I delete the registry keys HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate

But the keys return after a reboot.

What else can I try ?