I updated to Windows 2004. This is a big update which means it reinstalls Windows. Everything went smoothly except a couple of things for me:
If you changed anything in the registry it will be deleted
All icons will be reset
I have a Fence on my third monitor and it keeps jumping back to monitor one.
I had Microsoft games installed and this was removed
One good thing if you have a dedicated graphics card Task manager shows it's temp.
If I find anything else I report it.