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

Jupyter Notebook Token Not Working After Update: Fixes

After updating Jupyter Notebook or JupyterLab, you may find that the token-based authentication n...

Chrome Extension Blocked by Administrator: How to Fix

You see the message "This extension is blocked by your administrator" in Chrome, and you can't en...

Fix PowerShell Clipboard Access Denied Error

When you try to copy text to the clipboard in PowerShell and get an 'Access Denied' error, it usu...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

Fix 'Outlook File Locked by Windows File Sharing' Error

You try to open Outlook and get an error that the PST or OST file is locked by Windows file shari...

How to Fix Slow Windows Defender Scan Speed

If your Windows Defender (Microsoft Defender Antivirus) scan is taking much longer than usual—som...