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

Fix Windows Security High CPU Usage at Idle

If your system fan is spinning up or Task Manager shows Windows Security (Antimalware Service Exe...

Git Clone Publickey Permission Denied After Adding SSH Key

You've added your SSH public key to your Git hosting service (GitHub, GitLab, Bitbucket, etc.), b...

Fix Nginx Permission Denied for Static Files

If you see '403 Forbidden' or 'Permission denied' when nginx tries to serve static files (CSS, JS...

Fixing PowerShell Remote Execution Failures on a Network

How to Fix Windows Defender 404 Not Found Error

If you see a "404 Not Found" error when opening Windows Defender, it often means a required file ...

Fixing Certbot Certificate Renewal Configuration Issues

You set up Certbot to auto-renew your Let's Encrypt certificates, but renewal fails silently or w...