Fix Windows Activation 502 Bad Gateway After Upgrade
After a Windows upgrade, you might see a '502 Bad Gateway' error when trying to activate. This us...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Security Proxy Sync Issue
If Windows Security shows a proxy sync error, you may see a warning that security intelligence up...
Windows Security Connection Refused: Troubleshooting Checklist
When Windows Security reports a 'connection refused' error, it usually means the app can't reach ...
Fix Windows Defender 404 Not Found After Update
After installing a recent Windows update, some users find that Windows Defender is missing or sho...
How to Fix Remote Desktop Login Loop on Windows 10
You try to log into a Windows 10 machine via Remote Desktop, enter your credentials, and instead ...
Remote Desktop Error 0x104: How to Fix Connection Issues
You try to connect to a remote PC via Remote Desktop (RDP) and get error code 0x104. The connecti...
Topic paths
Quick titles
Command Prompt Proxy Error Troubleshooting ChecklistTroubleshooting Certbot Renew ErrorsFix BitLocker High Memory Usage on Windows 10Fix Windows Activation 502 Bad Gateway Firewall IssuesTroubleshooting PowerShell Proxy IssuesWindows 0xc004c003 Invalid Product Key FixPermission Denied on $WINDOWS.~BT Folder FixFix Command Prompt Service Unavailable Error 5