Checklists for software errors, setup, and tool workflows.

Fix Windows Security 404 Not Found Permissions Issue

You open Windows Security and see a 404 Not Found error, or the app won't load at all. Often this...

Fix SearchIndexer.exe Version Mismatch on Windows 10

If you see an error saying SearchIndexer.exe has a version mismatch on Windows 1...

Fixing Microsoft Teams Authentication Failed for Guest Users

When a guest user sees 'Authentication failed' in Microsoft Teams, they cannot sign in or access ...

GitLab Runner Not Running Jobs: Troubleshooting Checklist

If your GitLab Runner shows as registered but never runs any jobs, or jobs stay stuck in 'pending...

Chrome File Locked by Extension: Fixes and Checks

If you see a message like "File locked by extension" in Chrome, it usually means an extension has...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...