Fix Nginx Upstream Connection Refused Socket Error
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesPython Virtual Environment Not Activating on Ubuntu: Fixes
You've created a Python virtual environment on Ubuntu, but when you run source venv/bin...
VS Code Git Changes Not Detected After Clone: Fixes
You clone a repository, open it in VS Code, but the Source Control panel shows no changes—even th...
Fix Error 0x80070002 in Windows Update Registry
Error 0x80070002 during Windows Update typically means the system cannot find a required file. Th...
Fix Chrome Status Access Violation Registry Error
You open Chrome and see an error like STATUS_ACCESS_VIOLATION or a crash with that c...
Chrome Sync Not Working After Disabling Extensions: Fixes
You disabled some Chrome extensions to troubleshoot a problem, and now sync has stopped working –...
Issue queue
SitemapDocker Desktop Virtual Machine Error Troubleshooting
How to Update Node Version for Package Compatibility
Resolving Nginx Connection Refused Error
How to Enable Real-Time Protection in Defender
npm Build Failed: Syntax Error Troubleshooting
Fix Git SSL Certificate Problem: Unable to Get Local Issuer
Fix Chrome Access Violation Error on Mac
How to Stop Windows Explorer from Restarting
Remote Desktop Connection Failed 0x80004005 Guide
Troubleshoot Windows 11 Setup Hanging at Final Step
Windows Explorer Not Responding? Here's How to Fix It
Fix Greyed Out Breakpoints in VS Code Debugger
How to Update Node Version for Package Compatibility
Resolving Nginx Connection Refused Error
How to Enable Real-Time Protection in Defender
npm Build Failed: Syntax Error Troubleshooting
Fix Git SSL Certificate Problem: Unable to Get Local Issuer
Fix Chrome Access Violation Error on Mac
How to Stop Windows Explorer from Restarting
Remote Desktop Connection Failed 0x80004005 Guide
Troubleshoot Windows 11 Setup Hanging at Final Step
Windows Explorer Not Responding? Here's How to Fix It
Fix Greyed Out Breakpoints in VS Code Debugger