Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Windows Defender Real-Time Protection Troubleshooting Checklist

If Windows Defender real-time protection fails to turn on or keeps turning off, you may see warni...

Fix Nginx Upstream Connection Refused in Proxy Pass

When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix Git SSL Certificate Problem: Unable to Get Local Issuer Certificate
You’re trying to clone or push to a remote repository over HTTPS and Git throws an error like

Fix Docker Compose Port Already Allocated for PostgreSQL
You run docker-compose up and see an error like "Error starting userland pro...

Fix Windows Security App Not Opening Command Prompt
You click the Windows Security icon or try to launch it from Settings, but nothing happens. Or pe...

Fix Git index.lock File Exists Permission Denied Error
You're in the middle of a Git operation and suddenly you see:
fatal: Unable to ...


    Issue queue
Sitemap
VS Code Terminal 'Command Not Found' Fix
How to Fix npm ENOENT and Permission Errors
Fix Chrome Sync 'Sign In Again' Error
Fix Docker No Space Left on Device Error
Resolving Duplicate Git Remote Origin in VS Code
Restore Missing Bluetooth Icon in Windows 11
Docker Build Context Canceled: Quick Fixes
Python Requests Timeout Not Working: How to Fix
Troubleshooting Windows Defender 0x800704ec
Permanent Fix for Nginx Infinite Redirect
Resetting SoftwareDistribution to Fix Update Error 0x80070002
Fix 'Bluetooth Hardware Not Found' on Windows 11
Desk note

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