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

Jupyter Kernel Connection Error: Causes and Fixes

You start a Jupyter notebook, try to run a cell, and see a message like "Kernel error" or "Connec...

How to Reset Windows Defender Settings to Default

If Windows Defender isn't behaving as expected—real-time protection won't turn on, settings are g...

Windows Activation Troubleshooting Checklist for Common Errors

Windows activation errors usually appear after a hardware change, a fresh install, or a failed up...

Windows Terminal Authentication Failed: Troubleshooting Checklist

When Windows Terminal shows 'authentication failed' during an SSH or remote connection, it usuall...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

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

Microsoft Teams Update Not Installing from Office 365: Fixes

You see an update available for Microsoft Teams in your Office 365 portal, but when you try to in...