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

Fix ERR_CERT_AUTHORITY_INVALID in Chrome

When Chrome shows ERR_CERT_AUTHORITY_INVALID, it means the browser cannot verify...

UFW Port Closed Despite Allow Rule: Fixes

You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...

Fix Windows Update Login Loop After Configuration Settings

You restart your computer after a Windows update, and instead of reaching the desktop, you see th...

Fix Windows Terminal Version Mismatch During Setup

When installing or updating Windows Terminal, you might see an error like "Setup failed because a...

Fixing Microsoft Teams Rate Limit Error When Sending Messages

Fix OBS Virtual Camera Permission Denied on Mac

When you see a "permission denied" message for the OBS virtual camera on a Mac, it usually means ...