Checklists for software errors, setup, and tool workflows.

DNS Probe Finished NXDOMAIN: Meaning and Fixes

You're trying to visit a website but Chrome shows "DNS_PROBE_FINISHED_NXDOMAIN". This...

Fix Windows Update Error 0x80070005 with a Clean Boot

If you see Windows Update error 0x80070005, it usually means a program or service is interfering ...

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...

How to Fix Git Authentication Failed in VS Code

You're in VS Code, push or pull fails with "Authentication failed"—this is common and...

DNS Probe Finished NXDOMAIN: Internet Connection but No Browsing Fix

You see the error 'DNS probe finished NXDOMAIN' on Chrome or other browsers, yet your int...

Git Fatal: Refusing to Merge Unrelated Histories – Workaround

You try to merge two Git branches and get this error:

fatal: refusing to merge unre...