Fix Windows Defender Token Expired Preventing Service Start
You see 'Token expired' in the Windows Defender event log or a notification that the service didn...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Microsoft Store 'Port Already Allocated' Error via Firewall
When launching the Microsoft Store, you may see an error like 'Port already allocated' o...
BitLocker File Locked: Troubleshooting Checklist
You try to open a file on a BitLocker-encrypted drive and get an error saying the file is locked ...
Fix Windows Defender 404 Not Found in Group Policy
When you open the Group Policy Management Editor and navigate to Computer Configuration > Adminis...
How to Fix Windows SSL Certificate Error in Chrome
If you see "Your connection is not private" or "NET::ERR_CERT_DATE_INVALID" in Chrome on Windows,...
Chrome Profile Invalid Configuration Checklist
You open Chrome and see a message that your profile configuration is invalid. This usually means ...
Topic paths
Quick titles
How to Resolve Microsoft Store Connection RefusedWindows Terminal Update Error 0x80070002 TroubleshootingHow to Fix Remote Desktop DNS Error Code 0x800704cfOutlook Offline Installer Checklist for a New ComputerTroubleshoot Error 0x80072ee7 in Windows Search Offline InstallerResolve PowerShell Graph API 429 ErrorsRemote Desktop Ubuntu: Secure Configuration ChecklistFix Windows Search After Update: Checklist