Windows Upgrade Help and more

Yeah, that error code usually means a server-side issue with Microsoft's activation servers. First, make sure you're signed in with the same Microsoft account you used for your Windows 10 digital license. Then, try running the Activation troubleshooter again, but choose the "I changed hardware on ...

This. Agreed, and also double-check that your internet connection is stable when you run it—sometimes it just needs a solid reconnection to verify. Good luck!

Agreed, the profile corruption is a common culprit. One extra tip: before the upgrade, always export your taskbar layout with a quick PowerShell command to save the headache. Good luck!