Checklists for software errors, setup, and tool workflows.

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Latest checklists

If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...

Fix 'Git Remote Origin Already Exists' in VS Code
If you see “fatal: remote origin already exists” when trying to git remote add origin

Fix Git Merge Conflicts with Deleted Files
You're in the middle of a merge and git stops with a conflict. One side deleted a file, the o...

Fix Nginx Upstream Connection Refused Behind Cloudflare
If you see upstream connection refused in your Nginx error logs while using Cloudfla...

Windows 11 Update Stuck at 0%: Manual Download Fix
You click 'Check for updates' in Windows 11, and it hangs at 0% for minutes or hours. Res...

Fix Windows Update Service Stuck on Stopping
You try to stop the Windows Update service to troubleshoot an update issue, but it hangs on "...