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

Fix net::ERR_CERT_AUTHORITY_INVALID on Chrome in Linux Terminal

When you see net::ERR_CERT_AUTHORITY_INVALID in Chrome on Linux, it usually means th...

Fix Windows 11 Blue Screen After Update Stuck in Restart Loop

After a Windows 11 update, your PC may show a blue screen error and then restart repeatedly, neve...

Windows Explorer Restarting Checklist for Advanced Users

If Windows Explorer (explorer.exe) keeps restarting—freezing, flashing, or crashing repeatedly—it...

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...

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

Symptom

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

Fix Git Push Rejected: Non-Fast-Forward Error

You try to push your local commits to a remote Git repository, but Git refuses with: ! [rej...