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.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesWindows 11 Blue Screen After Cumulative Update: Fixes That Work
After installing a cumulative update, some Windows 11 users encounter a blue screen error (BSOD) ...
How to Fix pnpm Install Stuck at Resolving Dependencies
When pnpm install hangs on "Resolving dependencies", the process may appear stuck for min...
How to Fix Git Authentication Failed in VS Code
You're in VS Code, push or pull fails with "Authentication failed"—this is common and...
Fix Remote Desktop Error 0x80004005: Credential and Network Checks
When you attempt to connect to a remote PC and see error 0x80004005, the connection usually fails...
Setup Cloudflare Origin Certificate for Nginx
If you use Cloudflare as a reverse proxy, enabling HTTPS between Cloudflare and your Nginx server...
Issue queue
SitemapFix Python Permission Denied When Installing Packages
Resolve Git Push Rejected Due to Large File
Fix Chrome Sync Not Working with Family Link
Fix Windows 10 Shared Folder Access Denied Error
Fix Chrome Status Access Violation After Update
How to Fix DISM Restore Health When Windows Update Service Is Not Running
Edge Sync Not Working on Windows 11: Fixes
Fix Docker Volume Permission Denied for Non-Root User
Windows Explorer Crashing? Diagnostic Steps for Power Users
Troubleshooting npm Permission Denied in CI Environments
Removing Large Files from Git History
How to Restore VS Code Terminal After an Update
Resolve Git Push Rejected Due to Large File
Fix Chrome Sync Not Working with Family Link
Fix Windows 10 Shared Folder Access Denied Error
Fix Chrome Status Access Violation After Update
How to Fix DISM Restore Health When Windows Update Service Is Not Running
Edge Sync Not Working on Windows 11: Fixes
Fix Docker Volume Permission Denied for Non-Root User
Windows Explorer Crashing? Diagnostic Steps for Power Users
Troubleshooting npm Permission Denied in CI Environments
Removing Large Files from Git History
How to Restore VS Code Terminal After an Update