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

Replacing Windows Defender on Ubuntu: Practical Alternatives

If you're migrating from Windows and miss the built-in protection of Windows Defender, you'll fin...

Fix Windows Defender Threat Service Stopped & No Internet

You open Windows Security and see 'Threat service has stopped. Restart it now.' At the same time,...

Fixing 504 Gateway Timeout from Windows Update with Proxy

If you see a "504 Gateway Timeout" error when running Windows Update, and your system uses a prox...

Fix Windows Security Authentication Error 0x80070035

Outlook Stuck on Loading Profile with Multiple Accounts – Fix

If Outlook hangs on “Loading profile…” and you have multiple email accounts configured, the issue...

Windows Update Error 0x80070643: Troubleshooting Checklist

If you see error 0x80070643 when trying to install Windows updates, the update process likely fai...