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

Fix Windows Security High Memory Usage

If you notice Windows Security (formerly Windows Defender) using excessive memory—sometimes hundr...

Fix Windows Defender Service Not Starting with Permission Denied

If you see 'Windows Defender service not starting – permission denied' when trying to enable Micr...

Jupyter Kernel Not Starting After Update: Fixes

After updating Jupyter or its dependencies, you might see the kernel die immediately or hang with...

How to Fix Windows Security Update Failed Errors

You click 'Check for updates' and after a long wait, you see 'Some updates were not installed' or...

How to Use the Windows Search Service Configuration Tool

Windows Search can slow down or stop returning results when its service or index gets corrupted. ...

Fix Chrome SSL Certificate Error: Invalid Common Name