Checklists for software errors, setup, and tool workflows.

Fix Windows Security Can't Connect to Server Error

When you see "Windows Security cannot connect to the server" while trying to sign in or access a ...

Fix Microsoft Teams File Locked Not Opening

When you try to open a file in Microsoft Teams and get a “file locked” or “this file is locked fo...

Fix Windows Defender 404 Not Found Error on Windows 10

You click to open Windows Defender Security Center and see a 404 page, or the Settings app shows ...

How to Fix Windows Update Stuck at 0%

You click Check for updates, and the progress bar sits at 0% for minutes or hours. This is a comm...

Fix Windows Activation Server Timeout Error 0x80072efd

When you see error 0x80072efd while trying to activate Windows, it usually means your computer co...

Fix Docker Build Error: 'failed to solve: manifest not found'

You run docker build and get an error like:

failed to solve: error fetching ...