Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix Git 'index.lock' Error in VS Code

If you see the error 'fatal: Unable to create 'path/.git/index.lock': File exists'...

Fix 'Externally Managed Environment' Error on Linux

If you're on a modern Linux distribution (Ubuntu 23.04+, Debian 12+, Fedora 38+, etc.) and ge...

Fix Windows Security App Not Starting on Windows 11

You click the Windows Security icon or try to open it from Settings, but nothing happens. The app...

Fix Chrome Certificate Error Invalid Authority on Mac

You're browsing in Chrome on a Mac and suddenly see a warning: Your connection is not...

Fix Git LFS Authentication Failed on Push
You try to push a repository with Git LFS objects and get an error like Authentication fail...

Fixing Python UnicodeDecodeError When Reading CSV Files You're trying to read a CSV file in Python and you get UnicodeDecodeError: 'utf-8&#...

Issue queue Sitemap How to Turn IntelliSense Back On in VS Code Python Virtual Environment Activation Failed: Common Fixes Fix 'Permission Denied' When Deleting Files in VS Code How to Fix ERR_CONNECTION_RESET on Chrome Mobile How to Resolve Docker Permission Denied on Start Windows 11 Install Assistant Stuck at 99% Network Fix VS Code Breakpoint Not Working in Docker: Fixes Docker Nginx 502 Bad Gateway Fix Viewing the Diff in a Git Merge Conflict Mac Docker Missing Network Troubleshooting Guide Resolve Docker No Space Left on Device Error How to Fix Docker Pull Unauthorized Access Denied Desk note Troubleshooting paths Home Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities