Fix Docker Nginx 502 Bad Gateway Upstream Error
When running Nginx as a reverse proxy in Docker, a 502 Bad Gateway error with 'upstream' ...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Git index.lock File Exists Permission Denied Error
You're in the middle of a Git operation and suddenly you see:
fatal: Unable to ...Fix Nginx Configuration Test Failure in Docker
When you run nginx -t inside a Docker container and get an error, the container usua...
Fix Git Push Non-Fast-Forward and Permission Denied Errors
When you run git push and get an error like ! [rejected] main -> main (non-...
Fix Firefox Secure Connection Failed Error (Mozilla)
When Firefox shows 'Secure Connection Failed' and a message like MOZILLA_PKIX_ERROR_<...
Fixing Windows Update Error 0x80070005 and SFC Scan Issues
You try to run Windows Update but get error 0x80070005. When you run System File Checker (SFC /sc...
Issue queue
SitemapFix Chrome Extensions That Won't Load
Resolve Docker Desktop Error Code 0 Engine Stopped
How to Stop a Blue Screen Loop After Windows 11 Update
How to Get Python venv Working in VS Code Terminal
Windows Search Not Finding Files? Fix Indexing
Git Error: Index Lock File Exists – How to Fix
How to Fix Git Clone Timeout Errors
Windows Shared Folder Access Error: Advanced Sharing Settings Fix
Git Push Rejected: Unrelated Histories Fix
How to Fix Python UnicodeDecodeError: 'utf-8' Codec Can't Decode Byte
Python Virtual Environment Not Activating After Install: Fixes
Git Clone Connection Timed Out? Firewall Fixes
Resolve Docker Desktop Error Code 0 Engine Stopped
How to Stop a Blue Screen Loop After Windows 11 Update
How to Get Python venv Working in VS Code Terminal
Windows Search Not Finding Files? Fix Indexing
Git Error: Index Lock File Exists – How to Fix
How to Fix Git Clone Timeout Errors
Windows Shared Folder Access Error: Advanced Sharing Settings Fix
Git Push Rejected: Unrelated Histories Fix
How to Fix Python UnicodeDecodeError: 'utf-8' Codec Can't Decode Byte
Python Virtual Environment Not Activating After Install: Fixes
Git Clone Connection Timed Out? Firewall Fixes