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

Fix Remote Desktop Token Expired Certificate Error

When connecting to a remote desktop, you may see an error that the token has expired or the certi...

OneDrive SSL Certificate Expired: Troubleshooting and Fixes

If OneDrive suddenly stops syncing or shows an error about an SSL certificate being expired, it's...

Fix Windows Security Error 0x80070643 on Ubuntu Dual Boot

If you see error code 0x80070643 when running Windows Security or Windows Update on a dual-boot s...

Fix OneDrive Sync Permission Denied Errors

You see a red 'permission denied' icon on a file or folder in OneDrive, and the file won't sync. ...

Fix Windows Defender Can't Connect After Update

After a Windows update, you might see an error that Windows Defender can't connect to the service...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...