How to Fix Nginx Upstream Connection Refused on Port 80
When nginx logs show "upstream connection refused" while connecting to port 80, it means ...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesTaskbar Icons Missing After Windows Update: How to Restore Them
After a recent Windows update, you might notice that some or all taskbar icons have disappeared. ...
Fix VS Code Source Control Not Detecting Changes on Windows 11
If you're using VS Code on Windows 11 and the Source Control panel isn't showing your fil...
VS Code IntelliSense Not Working for Java: Fix Guide
You open a Java file in VS Code, start typing, and get no code completion, no parameter hints, no...
Fix Blue Screen Loop After Windows 11 Update
You install a Windows 11 update, restart, and then get stuck in a blue screen loop—the system cra...
Win 11 WiFi Connected But No Internet: IPConfig Release/Renew Fix
You're connected to WiFi, the icon shows full bars, but websites won't load. This usually...
Issue queue
SitemapDocker Volume Permission Denied: Causes and Solutions
Windows 11 Update Stuck at 0%: How to Fix with Troubleshooter
How to Get VS Code Terminal Working Again on macOS
Troubleshoot 502 Bad Gateway in Docker Nginx
Docker Network 502 Error Troubleshooting
How to Fix Remote Desktop Connection Timed Out Error
Stop Firefox Secure Connection Failed When Using VPN
Fix Detached HEAD Push Error in Git
Fix Windows 10 Shared Folder Access Denied Error
Fix Nginx Configuration Test: Missing Semicolon Error
Fix Node Version Incompatibility with Package
Nginx Permission Denied Error on CentOS: How to Fix
Windows 11 Update Stuck at 0%: How to Fix with Troubleshooter
How to Get VS Code Terminal Working Again on macOS
Troubleshoot 502 Bad Gateway in Docker Nginx
Docker Network 502 Error Troubleshooting
How to Fix Remote Desktop Connection Timed Out Error
Stop Firefox Secure Connection Failed When Using VPN
Fix Detached HEAD Push Error in Git
Fix Windows 10 Shared Folder Access Denied Error
Fix Nginx Configuration Test: Missing Semicolon Error
Fix Node Version Incompatibility with Package
Nginx Permission Denied Error on CentOS: How to Fix