Are still an issue. What I do is research what the update is. Most .NET updates are easy to solve and well discussed so I won't repeat the usual. Have the IT staffer research the KB number and some, like Windows Defender will always repeat. Again, I'd be duplicating the web on that one.

Microsoft did some odd things about the licensing so ask Parallels about the license issue. If you were ripped off, then you need to settle that as no one but the seller or Microsoft can correct that.
Bob