Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

Fix Windows Activation 504 Timeout When Connecting to KMS Server

Fix Windows Activation 504 Timeout When Connecting to KMS Server

When your Windows system tries to activate against a KMS server and you see a 504 timeout error, ...

Fix Python Module Not Found in VS Code: Common Causes and Solutions

Fix Python Module Not Found in VS Code: Common Causes and Solutions

You open a Python file in VS Code, run it, and get ModuleNotFoundError. The module i...

Fixing Windows Terminal Rate Limit Errors During Setup

Fixing Windows Terminal Rate Limit Errors During Setup

You're setting up Windows Terminal and get a rate limit error. This usually means too many reques...

Fix Microsoft Store 'File Locked' Error When Installing or Updating Apps

Fix Microsoft Store 'File Locked' Error When Installing or Updating Apps

When you try to install, update, or launch an app from the Microsoft Store, you might see an erro...

Windows 10 Activation Stuck on Checking Internet Connection

Windows 10 Activation Stuck on Checking Internet Connection

You're trying to activate Windows 10, but the activation screen keeps spinning on "Checking your ...

Fix Windows Activation Token Expired Despite Internet Connection

Fix Windows Activation Token Expired Despite Internet Connection

You see a message that your Windows activation token has expired, even though you're connected to...