Hi,
Thanks for your posting in Q&A.
Agree with AJTek-Adam-J-Marshall, the issue may be WSUS is not removed completely.
We need to:
Remove WSUS Role and Windows Internal Database (WID) Feature.
Remove C:\WSUS or where ever the WSUSContent folder resides.
Remove C:\Windows\WID (specifically: delete the SUSDB.mdf and SUSDB_log.ldf in C:\Windows\WID\Data). If you don't remove the WID role and its files on a reinstall, it will re-attach to the same database.
In IIS, remove the 'WSUS Administration' website and the 'WsusPool' Application Pool if they still exist.
Restart the server and re-add the WSUS And WID Roles. Let it install, and then restart the server again.
Now try to do the post-installation configuration.
If this doesn't work, disjoin the server from the domain, and restart. Try the post-installation steps again. If it works, the issue is a policy on your domain that is causing the issues. You can then rejoin the server to the domain.
After you've removed WSUS completely following the instructions above, you can then go ahead and install it again if you so choose.
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