I have a server that I built (2012 R2) and connected to my WSUS server. It successfully patched and everything worked (from a WSUS perspective). However, I ended up having to rebuild the server from scratch just a few days later (due to another
issue). I used the same name/ip address for the re-built system. I deleted the computer out of WSUS and let it re-detect it, but it still thinks it's already patched (I'm assuming from the info. it stored in the database from the initial version
of this server.) I've tried deleting the keys in HKLM\Software\Microsoft\Windows\CurrentVersion\WindowsUpdate to have it generate a new GUID to connect with, but that doesn't seem to work either. Is there a simple way to get the WSUS server to"believe" that this system isn't patched and still needs all the patches that it previously installed to the "other" version of my server?
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