Nginx 502 Bad Gateway: A Practical Troubleshooting Guide
Seeing a 502 Bad Gateway from Nginx usually means the upstream server (like PHP-FPM, uWSGI, or a ...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix OneDrive High CPU Usage in Windows 10
If your Windows 10 PC fan is running loud and Task Manager shows OneDrive using 30% or more CPU, ...
Fix Windows Search 404 Not Found Error via Registry
If Windows Search returns a '404 Not Found' error when you try to open the search pane or run a q...
Fix Windows Security Token Expired Permissions Denied Error
If you see 'security token expired' or 'permissions denied' when accessing files, folders, or net...
How to Fix Chrome Slow Performance on Windows 10
If Chrome feels sluggish on your Windows 10 machine — pages take forever to load, scrolling stutt...
Firefox Profile Missing Troubleshooting Checklist
When Firefox starts but shows none of your bookmarks, passwords, or extensions, the profile may b...
Issue queue
SitemapFix Windows Defender on Mac Not Scanning Files
How to Fix Outlook DNS Error Configuration
Reactivate Expired Windows License: Step-by-Step
Microsoft Teams Connectivity Check Not Working Fix
How to Resolve BitLocker Path Not Found Error
How to Resolve Microsoft Teams Sync After Restore
Solve FFmpeg Audio Drift in VLC Playback
Fix Microsoft Teams DNS Error Not Connecting
Resolve Microsoft Store Gateway Timeout on Windows 11
Microsoft Teams Troubleshooting: Clear Cache and Reset
Fix OneDrive Sync Not Working After macOS Update
How to Unstick Outlook Safe Mode Loading Profile
How to Fix Outlook DNS Error Configuration
Reactivate Expired Windows License: Step-by-Step
Microsoft Teams Connectivity Check Not Working Fix
How to Resolve BitLocker Path Not Found Error
How to Resolve Microsoft Teams Sync After Restore
Solve FFmpeg Audio Drift in VLC Playback
Fix Microsoft Teams DNS Error Not Connecting
Resolve Microsoft Store Gateway Timeout on Windows 11
Microsoft Teams Troubleshooting: Clear Cache and Reset
Fix OneDrive Sync Not Working After macOS Update
How to Unstick Outlook Safe Mode Loading Profile