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 502 Bad Gateway: Upstream Connection Refused

If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...

How to Fix Python Requests Connection Timeout Errors

You're making a request with the requests library and it hangs, then raises

DNS Probe Finished NXDOMAIN: Troubleshooting Checklist

Seeing "DNS_PROBE_FINISHED_NXDOMAIN" in Chrome means the browser couldn't find the IP...

Fix VS Code 'Cannot Save File: Permission Denied' on Mac

You're editing a file in VS Code on your Mac, hit save, and get: 'Failed to save:...

Fixing Python UnicodeDecodeError with latin-1 Codec
You're reading a file in Python and hit UnicodeDecodeError: 'charmap' codec can...

Fix 'npm package json not found' Error When Using npx When you run npx some-package and see an error like “npm package json not found”...

Issue queue Sitemap Windows Search Indexer Permission Error Fix Nginx Permission Denied Error for Access Log pip Externally Managed Environment Error Guide Cloudflare DNS Propagation Stuck After SSL Change Understanding and Fixing Git Unrelated Histories Python UnicodeDecodeError: Using ignore to Skip Bad Bytes Fix Port Already Allocated Error in Docker Compose Git SSL Certificate Verification Failed Local Issuer Fix Windows 11 Wi-Fi No Internet with IPv6 Off How to Fix a Detached HEAD in Git Using SourceTree Fix DNS Probe Finished NXDOMAIN After Flushdns Fails Bypass Externally Managed Flag in pip Desk note Troubleshooting paths Home Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities