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

Fix Windows Defender Proxy Error Not Working

You launch Windows Defender Security Center or try to run a scan, and you see a proxy error—somet...

Fix OneDrive Error 0x8004de40: Cannot Connect to Server

If you see the error "OneDrive cannot connect to server" with code 0x8004de40, it usually means O...

Fix Microsoft Store Rate Limit Error 0x80073cf0

If you see error 0x80073cf0 in Microsoft Store, it usually means you've sent too many requests in...

FileZilla Connection Timeout: Firewall Configuration Fix

If FileZilla shows a connection timeout error, your firewall is often the culprit. This article c...

OBS Virtual Camera Black Screen: How to Fix

If you see a black screen when using OBS Studio’s virtual camera in Zoom, Teams, or other apps, t...

Fix Microsoft Store 404 Not Found Error on Reinstall