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

Fix DNS Probe Finished NXDOMAIN on Chrome for Mac

You're browsing in Chrome on your Mac and suddenly a site won't load. Instead, you see the error ...

How to Fix Remote Desktop Connection Not Working

You try to connect to a remote PC but get an error, a black screen, or nothing happens. This is c...

Fix Windows Update Error 0x8024401c Due to Network Issues

If you see error 0x8024401c when running Windows Update, it usually means your PC can't reach Mic...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

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

How to Fix Windows Security Service Unavailable

When Windows Security shows "Service unavailable" or a red banner, your antivirus and firewall pr...

Fix PowerShell 504 Gateway Timeout After Windows Update

After a recent Windows update, some users see a 504 Gateway Timeout error when running PowerShell...