Fixing Nginx Upstream Connection Refused on Port 443
You see "upstream connection refused" in your Nginx error log when proxying requests to p...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesWhy VS Code Debugger Breakpoints Are Greyed Out and How to Fix
You set a breakpoint in VS Code, but it appears greyed out and the debugger skips it. This usuall...
Fix ERR_NAME_NOT_RESOLVED in Chrome Safe Mode
If you see ERR_NAME_NOT_RESOLVED in Chrome while browsing in safe mode (Incognit...
How to Fix VS Code Source Control Not Detecting Changes
You open VS Code, edit a file, and expect to see it in the Source Control view. But the panel sta...
Fix Docker Pull Access Denied in CI/CD Pipeline
When a CI/CD pipeline fails with denied: requested access to the resource is denied ...
Fix Windows Update Error 0x80070002 by Resetting SoftwareDistribution Folder
Windows Update error 0x80070002 often appears when the system cannot find or access the update fi...
Issue queue
SitemapHow to Fix Docker Build Context Canceled Error
Fixing Nginx 502 Bad Gateway with Docker and Load Balancers
Fix Windows 11 Bluetooth Problems: Step-by-Step Guide
How to Add Python to PATH in Windows
Windows 11 Blue Screen After Update: Step-by-Step Fix
Fix 'Windows Cannot Access Shared Folder' Permission Denied
Nginx 403 Forbidden Error Troubleshooting
Fix ERR_NAME_NOT_RESOLVED by Clearing DNS Cache
Troubleshooting npm package.json Not Found Error on Linux
Resolve Python UnicodeDecodeError When Reading Files
Resolve Nginx 502 Bad Gateway in Docker via Environment Variables
Resolving Git SSL Certificate Problems on Linux macOS Windows
Fixing Nginx 502 Bad Gateway with Docker and Load Balancers
Fix Windows 11 Bluetooth Problems: Step-by-Step Guide
How to Add Python to PATH in Windows
Windows 11 Blue Screen After Update: Step-by-Step Fix
Fix 'Windows Cannot Access Shared Folder' Permission Denied
Nginx 403 Forbidden Error Troubleshooting
Fix ERR_NAME_NOT_RESOLVED by Clearing DNS Cache
Troubleshooting npm package.json Not Found Error on Linux
Resolve Python UnicodeDecodeError When Reading Files
Resolve Nginx 502 Bad Gateway in Docker via Environment Variables
Resolving Git SSL Certificate Problems on Linux macOS Windows