Fix Invalid Windows Activation After Upgrade
After upgrading Windows—whether from an older version or a feature update—you might see an error ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix High Memory Usage from Windows Activation in Windows 10
If you notice your Windows 10 system is using a lot of memory and you suspect it's related to act...
How to Rearm Windows Activation Grace Period
When Windows is not activated, you have a limited time (typically 30 days) before it starts showi...
How to Fix BitLocker 404 Not Found Error
You try to unlock a BitLocker-encrypted drive, but instead of a prompt for the recovery key, you ...
Fix Chrome Service Unavailable After Update
After a Chrome update, some users see a 'Service Unavailable' error when trying to load pages. Th...
How to Fix Remote Desktop Connection Refused Error
When you try to connect to a remote PC and see "Connection refused" or "The connection was refuse...
Topic paths
Quick titles
Troubleshoot 502 Bad Gateway Error Post-RebootUltimate Mac OneDrive Sync Troubleshooting GuideOutlook High CPU Usage FixHow to Clear Microsoft Store Cache for Access Denied ErrorFix Chrome Access Denied Error 0xc0000022How to Fix pnpm EACCES Error with npm GlobalsPermission Denied Windows Terminal Port TroubleshootingFix OneDrive Sync Update Error Guide