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

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

How to Manually Set Up Windows Update on a Mac

If you use a Mac with Boot Camp or a virtual machine like Parallels Desktop or VMware Fusion to r...

Fix Windows Security Rate Limit Error Configuration

You may see a rate limit error in Windows Security when trying to update definitions, run a scan,...

Fix 'Windows Defender Command Not Found Access Denied'

You type MpCmdRun.exe -Scan -ScanType 2 or another Defender command in Command Promp...

How to Fix Jupyter Notebook Token Authentication Error

When you start Jupyter Notebook, you might see a prompt asking for a token or password, or the br...

Fix Windows Store Error 0x80073cf9 Permission Denied

When you see error 0x80073cf9 in the Windows Store, it usually means the installer can't write to...