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

Fix Cloudflare SSL Flexible Redirect Loop and Permission Denied

If you're using Cloudflare's Flexible SSL and seeing a redirect loop or 'permission denied' in yo...

Jupyter Kernel Dead: Common Causes and Fixes

You're working in a Jupyter notebook, and suddenly the kernel dies. The notebook becomes unrespon...

Fix Docker Pull Denied Error 403: Practical Steps

You run docker pull and get a 403 denied error. This usually means authentication or...

Fix MySQL Workbench Connection Refused on Mac

When MySQL Workbench on Mac shows 'connection refused', it usually means the MySQL server isn't r...

Fix systemd Service Restart Loop Due to Unit File Errors

You notice a service keeps restarting repeatedly, filling logs with start/stop messages. This oft...

Windows Update High CPU Usage Troubleshooting Checklist