
Fix Windows Activation Version Mismatch After Upgrade
After upgrading Windows—whether from Home to Pro or from an older build to a newer one—you might ...
Software troubleshooting desk

After upgrading Windows—whether from Home to Pro or from an older build to a newer one—you might ...

After reinstalling Windows or your security software, you might see a “token expired” error in Wi...

You’re trying to install a Windows update manually—maybe a cumulative update or a .cab file—and y...

After a recent Windows or Office update, you might see “OneDrive sync is unavailable” or the sync...

You reinstall Windows, enter your product key, and get an error: “This product key does not match...

You see 'Activating' in Settings > System > Activation, but it never finishes. This is a common g...