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

Fix Outlook 502 Bad Gateway Error After Update

After a recent Outlook update, you might see a '502 Bad Gateway' error when trying to send or rec...

How to Enable Command Prompt Disabled by Administrator

If you see the message “Command Prompt has been disabled by your administrator” when trying to op...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

How to Fix Chrome Authentication Failed Error

When Chrome shows an 'authentication failed' error, it usually means the browser can't verify you...

How to Reduce Windows Security Memory Usage

Windows Security (formerly Windows Defender) can sometimes use more memory than expected, especia...

Fix Windows Security Offline Installer Fails

When installing Windows Security (formerly Windows Defender) offline, the installer may fail sile...