Checklists for software errors, setup, and tool workflows.

Fix 'fatal: refusing to merge unrelated histories' in Bitbucket

You're working with a Bitbucket repository and when you try to merge two branches, Git throws...

Fix Windows Update Error 0x800f081f After Update

If you see error 0x800f081f after a Windows update, the installation likely failed because requir...

Cloudflare 521 Error: Troubleshooting and Fixes

When you see a 521 Web Server Is Down error, it means Cloudflare cannot establis...

How to Fix Nginx Redirect Loop with Cloudflare

You set up Cloudflare for your site, and now visitors see a redirect loop error. The page keeps r...

DNS Probe Finished NXDOMAIN: Troubleshooting Checklist

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

How to Fix Git Merge Unrelated Histories Error

You run git pull or git merge and get:

fatal: refusing to...