Software troubleshooting desk

Practical fixes for tool errors, setup blocks, and workflow issues.

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Fix VS Code 'Permission Denied' When Saving Files

You're editing a file in Visual Studio Code, hit Ctrl+S, and get an error: "Failed to sav...

Fix Externally Managed Error: Create Virtual Environment

If you're on a modern Linux distribution and try to install a Python package with pip, you ma...

Fix Windows 11 Update Stuck at 0% – SoftwareDistribution Folder

If your Windows 11 update is stuck at 0% and not progressing, the SoftwareDistribution

Windows Security App Not Opening? Try These Steps
If the Windows Security app won't open, shows a blank screen, or crashes immediately, you'...

Fix VSCode IntelliSense Not Working for Node.js
You open a Node.js project in VSCode, start typing process., and get no suggestions....


    Issue queue
Sitemap
Fix Nginx Upstream Connection Refused in Proxy Pass
Docker Network Not Found Error 255 Fix
Fix 'Windows Cannot Access Shared Folder' Permission Denied
Fix Windows 11 WiFi Connected but No Internet: IPv4 Settings
Python MemoryError Large File Fix Checklist
How to Use a Cloudflare DNS Propagation Checker Tool
How to Fix npm run build Exit Code 1
How to Stop Windows Explorer from Constantly Restarting
WiFi Connected but No Internet on Wake: Windows 11 Guide
How to Debug PostCSS Build Failures
How to Fix Windows Remote Desktop Connection Failed Error
How to Fix Venv Activation Problems
Desk note

    Troubleshooting paths
Home
Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities