Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you're having trouble with the Microsoft Store—apps not downloading, updates stuck, or the sto...

You open Task Manager and see Windows Security (the process is MsMpEng.exe) using 500 MB or more ...

If you see a message that your Windows Defender token has expired, it usually means the security ...

OneDrive sync not connecting on Windows 10 usually means the app can't reach Microsoft servers or...

When you try to open a Microsoft Store log file (usually from %LOCALAPPDATA%\Microsoft\Wind...

How to Fix Windows Update Stuck on Configuring
You restart your PC to install updates, and it hangs on “Configuring Windows updates” for an hour...