Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Why npm Says 'package.json Not Found' and How to Fix It

You run npm install or npm start and get npm ERR! package.json no...

Fix VS Code Git Authentication Failed Keychain Error
If you see "Git authentication failed" in VS Code on macOS, the problem is often the macO...

Docker Compose Environment Variable Not Set in Container: Fixes
You ran docker-compose up, but the environment variable you defined isn't availa...

Fix 'git remote origin already exists' with Wrong URL
You run git remote add origin <url> and get: fatal: remote origin alread...

Fix Windows Security App Access Denied Error
When you open Windows Security (formerly Windows Defender Security Center) and see an 'Access...


    Issue queue
Sitemap
How to Fix Docker NGINX 502 Bad Gateway
Python Version Mismatch Troubleshooting
Resolve Docker Compose Port Already Allocated
How to Enable Windows Defender Real-Time Protection in Windows 11
Enable Edge Sync with Work or School Account
How to Fix npm ERR! enoent package.json Not Found on Linux
Fix Pip Install Permission Denied Error
Windows Security App Configuration Error Fix
VS Code Git Detection Not Working After Clone
Resolve Docker Permission Denied on Mounted Volumes
Fix Windows Update Error 0x80070002
VSCode IntelliSense Not Working for JavaScript: Fixes
Desk note

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