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 in Proxy Pass

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

Fix DNS Probe Finished NXDOMAIN on Chrome for Android
If you see the error 'DNS_PROBE_FINISHED_NXDOMAIN' in Chrome on your Android phone, it me...

Fix Cloudflare DNS Propagation Not Happening for www
You updated DNS records for your www subdomain in Cloudflare, but hours (or days) later, the chan...

Prevent Git Index Lock File Creation: Practical Fixes
If you see fatal: Unable to create 'path/to/.git/index.lock': File exists., ...

Fix npm install Permission Denied in Home Directory
If you see EACCES: permission denied or similar errors when running npm instal...

Add Python to PATH on Windows 10 When 'Command Not Found'
After installing Python on Windows 10, typing python in Command Prompt may give you ...


    Issue queue
Sitemap
Python Not Working in Command Prompt Windows 10
Windows 11 Update Blue Screen: Recovery Environment Fixes
Troubleshooting Permission Denied for pip install -r requirements.txt
Troubleshooting Missing Taskbar Icons After Driver Update
Resolve 0x80070002 Windows Update Failure
How to Resolve Python Dependency Conflicts After Update
How to Clear Edge Sync Cache and Resolve Sync Issues
How to Refresh Git Cache After .gitignore Update in VS Code
How to Clean Install Chrome to Fix Status Access Violation
Troubleshooting Blue Screen Crashes Post Windows 11 Update
Resolve VS Code Cannot Save File Error macOS
Docker Custom Network Not Found Error
Desk note

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