Windows Defender 502 Bad Gateway: Troubleshooting Checklist
If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Windows Activation Service Unavailable on Windows 10 Pro
If you see the error 'Windows Activation Service Unavailable' on Windows 10 Pro, it usually means...
Fix PowerShell 504 Gateway Timeout When Calling REST API
When you call a REST API from PowerShell and get a 504 Gateway Timeout, it means the server upstr...
Fixing WireGuard Handshake Errors on Windows
If you're using WireGuard on Windows and seeing "Handshake did not complete" or "No handshake rec...
Fix PowerShell Permission Denied Error on Startup
Opening PowerShell and seeing a 'permission denied' error can stop you before you start. This usu...
Fix Windows Search Update Permission Denied Error
You try to update Windows Search, but get a 'permission denied' message. This usually happens whe...
Issue queue
SitemapTask Scheduler Alternative Not Opening on macOS? Try These Steps
How to Resolve OneDrive 502 Bad Gateway with Configuration Changes
How to Fix Windows Defender Antivirus Disabled Permanently
How to Fix Remote Desktop Error 0x204
Troubleshoot Docker Desktop Hang on Apple Silicon
How to Reactivate Windows with Digital Entitlement
Setup Windows Update via Command Line: Command Not Found Error
How to Resolve Teams Authentication Failed for Guests
Resolve Windows Defender Credential Loop Post-Update
Windows Activation Setup and Troubleshooting Guide
Fix Windows Security via PowerShell Reset
Windows Terminal Version Conflict Troubleshooting Guide
How to Resolve OneDrive 502 Bad Gateway with Configuration Changes
How to Fix Windows Defender Antivirus Disabled Permanently
How to Fix Remote Desktop Error 0x204
Troubleshoot Docker Desktop Hang on Apple Silicon
How to Reactivate Windows with Digital Entitlement
Setup Windows Update via Command Line: Command Not Found Error
How to Resolve Teams Authentication Failed for Guests
Resolve Windows Defender Credential Loop Post-Update
Windows Activation Setup and Troubleshooting Guide
Fix Windows Security via PowerShell Reset
Windows Terminal Version Conflict Troubleshooting Guide