Fix Nginx Upstream Connection Refused in Proxy Pass
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.
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All notesFix VSCode Source Control Not Detecting Changes
You're working in Visual Studio Code, you edit a file, but the Source Control view shows no c...
Windows Security App Not Opening as Administrator: Fixes
When you try to open the Windows Security app and it fails to launch, often with no error message...
Fix Cloudflare Wildcard Subdomain Not Resolving
You set up a wildcard DNS record in Cloudflare (e.g., *.example.com) expecting all s...
Manually Download and Fix Windows Update Error 0x80070002
You see error 0x80070002 when checking for updates. It usually means Windows Update can't fin...
Windows 11 Bluetooth Not Working? 10 Troubleshooting Steps
Bluetooth problems in Windows 11 are common. You might see the Bluetooth icon missing, devices no...
Issue queue
SitemapCloudflare Origin Certificate Troubleshooting Checklist
How to Enable Windows Defender Real-Time Protection After Update
Python Requests: Fixing Connection Timeout with Proxies
Docker Volume Permission Denied: Step-by-Step Checklist
Chrome Startup Crash Due to Malware: Detection and Fix
VSCode Source Control Not Showing Changes Fix
Windows 11 Defender Real-Time Protection Won't Stay On
Chrome ERR_CONNECTION_RESET Extension Fix
Chrome Invalid Authority Certificate Error on Mac Fix
ERR_NAME_NOT_RESOLVED Chrome Android – How to Fix
Resolve Cloudflare 521 Error (Port 443 Blocked)
Fix Windows Update Error 0x800f081f After Update
How to Enable Windows Defender Real-Time Protection After Update
Python Requests: Fixing Connection Timeout with Proxies
Docker Volume Permission Denied: Step-by-Step Checklist
Chrome Startup Crash Due to Malware: Detection and Fix
VSCode Source Control Not Showing Changes Fix
Windows 11 Defender Real-Time Protection Won't Stay On
Chrome ERR_CONNECTION_RESET Extension Fix
Chrome Invalid Authority Certificate Error on Mac Fix
ERR_NAME_NOT_RESOLVED Chrome Android – How to Fix
Resolve Cloudflare 521 Error (Port 443 Blocked)
Fix Windows Update Error 0x800f081f After Update