Checklists for software errors, setup, and tool workflows.

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...

Fix Chrome Profile Auth Error 0x800704cf

You see the error "Chrome profile authentication failed" with code 0x800704cf when trying to sign...

How to Set Up Remote Desktop on Windows 11

Before You Start

Remote Desktop lets you connect to your Windows 11 PC from another devic...

How to Fix Windows Defender Service Not Running

If you see a message that Windows Defender is not running or the security center shows it's off, ...

Windows Search 502 Bad Gateway Reset Steps

You search for a file or setting in Windows, and instead of results you see a 502 Bad Gateway err...

Fix Chrome Enterprise Policy Invalid Configuration Error

When managing Chrome browsers with enterprise policies, you may encounter an 'Invalid configurati...