Knowledge base for software setup, errors, and daily tool work.

Git Detached HEAD: Practical Checklist and Fixes

You see a message like 'You are in 'detached HEAD' state' when checking out a com...

Windows 11 Update Failed Blue Screen Rollback Fix

You start your PC after a Windows 11 update and get a blue screen, then it rolls back. This artic...

Fix Cloudflare 522 Error by Disabling Proxy Temporarily

If you see a Cloudflare 522 error, it means Cloudflare tried to reach your origin server but the ...

Fix Python venv Not Activating in CMD

You create a virtual environment with python -m venv myenv, navigate to the Scripts ...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix Cloudflare Error 521 After a Server Update

If you see Cloudflare error 521 after updating your server, the origin web server is refusing the...