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

Setting Up Windows Activation for Ubuntu VM

If you're running a Windows virtual machine on Ubuntu, you'll need to activate it with a valid li...

BitLocker Recovery Key Not Accepted: Fix Authentication Failed Error

Fix Jupyter Notebook Token Not Working on Windows

When you start Jupyter Notebook (or JupyterLab) on Windows, it often opens a browser tab asking f...

Fix Outlook High Memory Usage and Permission Denied on PST

Outlook users sometimes encounter two related problems: high memory usage (often 1 GB or more) an...

Fix Windows Defender Can't Connect to Internet Error

If Windows Defender shows “Can’t connect to the internet” or similar errors, it usually means the...

Fix DNS_PROBE_FINISHED_NXDOMAIN Error in Chrome for All Sites

If you see DNS_PROBE_FINISHED_NXDOMAIN in Chrome and no sites load, it means you...