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

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED on Windows 10

If you see ERR_TUNNEL_CONNECTION_FAILED in Chrome while browsing on Windows 10, ...

Checklist for Windows Security Module Errors

When Windows Security (formerly Windows Defender) throws module errors, you might see messages li...

Fix 'Windows Activation Key Not Accepted' Error

You enter a valid Windows product key and get an error saying it's not accepted. This is frustrat...

Fix Windows Defender Access Denied Error on Startup

If you see 'Windows Defender failed to start access denied' when you open Windows Security or aft...

Fix Microsoft Store High Memory Usage from Antivirus Conflicts

If you notice Microsoft Store using excessive memory (often 500 MB or more) and your system feels...