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 Windows 11 No Internet but Wi-Fi Connected DNS Issue
You see the Wi-Fi icon connected with full bars, but apps, browsers, and system updates all repor...
Chrome Certificate Error: Not Secure Site Workaround
You're trying to reach a site and Chrome shows a full-page warning: “Your connection is not p...
Troubleshoot Python Virtual Environment Not Working: Practical Fixes
If you've created a Python virtual environment but it isn't activating, packages aren'...
Fix Windows 11 Blue Screen After Update with System Restore
If you're seeing a blue screen after installing a Windows 11 update, System Restore can often...
Fix Node Sass Build Failed with Visual Studio Build Tools
When you see node-sass build failed during an npm install, it usually means the nati...
Issue queue
SitemapTroubleshoot RDP Error Code 0x204
Git Clone Connection Timed Out: Causes and Fixes
Fix Nginx Upstream Connection Refused in Proxy Pass
Fix Docker Pull Access Denied: Authentication Required
Docker Pull Access Denied After Login: Troubleshooting Guide
How to Recover Pruned Docker Networks
Resolve Chrome NET::ERR_CERT_AUTHORITY_INVALID from Antivirus
VSCode JavaScript Autocomplete Not Working Fix
Fix Externally Managed Environment Warning in pip
Windows 7 Python Command Not Found Troubleshooting
How to Fix an Nginx Redirect Loop: Step-by-Step
How to Avoid Docker Build Context Canceled Errors
Git Clone Connection Timed Out: Causes and Fixes
Fix Nginx Upstream Connection Refused in Proxy Pass
Fix Docker Pull Access Denied: Authentication Required
Docker Pull Access Denied After Login: Troubleshooting Guide
How to Recover Pruned Docker Networks
Resolve Chrome NET::ERR_CERT_AUTHORITY_INVALID from Antivirus
VSCode JavaScript Autocomplete Not Working Fix
Fix Externally Managed Environment Warning in pip
Windows 7 Python Command Not Found Troubleshooting
How to Fix an Nginx Redirect Loop: Step-by-Step
How to Avoid Docker Build Context Canceled Errors