Windows Update broke Windows Server Update Service

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Sometime back in May 2016, I noticed that our Windows Server Update Service stopped working. Win 7 users are no longer getting updates. Windows 10 users are getting notifications to Get Updates but doing so will just lead to errors. Upon checking the WSUS server, I found that I can no longer open the WSUS console (MMC snap-in).

After many hours checking on the internet, I finally found the solution. Aparently, it's one of the Updates that broke the system.

The best solution I found was at http://byronwright.blogspot.com.au/2012/06/kb-2720211-kills-wsus.html. It wasn't really the article itself that helped me, but the comment July 11, 2012 at 8:02AM by Martjin

His words:
First I changed the HKEY_LOCAL_MACHINE\Software\Microsoft\Update Services\Server\Setup\wYukonInstalled to 0
Run the update and changed it back to 1.

than:
◦Download and run WSUS-KB270211-x64.exe /extract to extract the files.
◦Use a program capable of extracting CAB files (7 zip) to open PCW_CAB_SUS and copy the files DbCert, DbCertDll, and DbCertSql
◦Rename those files to WSUSSignDb.cer, WSUSSignDb.dll, and WSUSSignDb.sql.
◦Copy the cer and dll file to: C:\Windows\Sysmsi\ssee\mssql.22005\mssql\schemasig
◦Copy the sql file to C:\Program Files\Update Services\Database
•Rerun the (WSUS-KB2720211-x64.exe) update again.
 I tried that and WSUS server went back on.

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