Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fixing Nginx Upstream Connection Refused on Port 443

You see "upstream connection refused" in your Nginx error log when proxying requests to p...

Fix npm run build Permission Denied on Linux

You run npm run build on your Linux machine and see Permission denied. ...

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:...

How to Fix the Git index.lock File Exists Error
You're in the middle of a Git operation—commit, merge, or rebase—and Git stops with: fa...

Fix Docker Compose 'port 8080 already allocated' Error When running docker-compose up, you may see an error like Error: Port 8080 is ...

Fix Windows Cannot Access Shared Folder with Password Protected Sharing You try to access a shared folder from another computer on your network and get an error: "Wi...

Issue queue Sitemap How to Fix Edge Sync Stuck on Preparing Sync How to Get Python venv Working in VS Code Terminal Using pipx When pip Says Externally Managed Environment Increase Timeout for Python HTTP Requests Git Detached HEAD IntelliJ Troubleshooting How to Fix Node Engine Version Mismatch Resolving Git SSL Certificate Issues on Corporate Networks DNS Probe Finished NXDOMAIN vs Server Not Found: Key Differences How to Fix Explorer Restart Loop After Windows Update How to Fix Error 0x80070005 When Updating Windows Fix Docker Pull Access Denied: Authentication Required Fixing 'git rebase index.lock file exists' Error Desk note Troubleshooting paths Home Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities