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 notesWindows Explorer Restarting Checklist for Advanced Users
If Windows Explorer (explorer.exe) keeps restarting—freezing, flashing, or crashing repeatedly—it...
Fix ERR_NAME_NOT_RESOLVED in Chrome Safe Mode
If you see ERR_NAME_NOT_RESOLVED in Chrome while browsing in safe mode (Incognit...
Fix Git SSL Certificate Verify Failed: Unable to Get Local Issuer
When you see fatal: unable to access '...': SSL certificate problem: unable to get ...
Fix 'port already allocated' for Nginx in Docker Compose
You're starting your Docker Compose setup with Nginx, and you see "port is already alloca...
Fix ERR_CONNECTION_RESET Caused by Firewall Blocking Chrome
If you see ERR_CONNECTION_RESET in Chrome, it usually means something interrupte...
Issue queue
SitemapTroubleshooting Windows Update Service Issues
How to Fix Chrome Black Screen from Hardware Acceleration
Cloudflare DNS Not Propagating to All Nameservers: Common Fixes
Troubleshooting Cloudflare 526 Invalid Origin Certificate
How to Fix ERR_CONNECTION_RESET on Chrome Mobile
VS Code Breakpoint Greyed Out: Causes and Solutions
Fix Windows Defender Real-Time Protection Configuration Error
How to Fix Bluetooth Driver Issues in Windows 11
Python Pipenv Dependency Conflict Troubleshooting
Docker Log Files Filling Up Disk? Here's the Fix
Fix 'pip install externally managed environment' Error
How to Fix Windows Search Indexing Slow Performance
How to Fix Chrome Black Screen from Hardware Acceleration
Cloudflare DNS Not Propagating to All Nameservers: Common Fixes
Troubleshooting Cloudflare 526 Invalid Origin Certificate
How to Fix ERR_CONNECTION_RESET on Chrome Mobile
VS Code Breakpoint Greyed Out: Causes and Solutions
Fix Windows Defender Real-Time Protection Configuration Error
How to Fix Bluetooth Driver Issues in Windows 11
Python Pipenv Dependency Conflict Troubleshooting
Docker Log Files Filling Up Disk? Here's the Fix
Fix 'pip install externally managed environment' Error
How to Fix Windows Search Indexing Slow Performance