Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Windows Defender Offline Scan Setup Guide

If your Windows PC is infected with malware that won't go away with a normal scan, a Windows Defe...

Fix Windows Search 'Access Denied' Permission Error

When Windows Search fails to index a file and shows 'access denied' or 'cannot access file permis...

Fix Chrome Profile Port Already Allocated on Windows 10

You start Chrome and see an error saying the profile port is already allocated. This usually happ...

Fix Windows Search Network Error After Update

After a recent Windows update, you might see a network error when using Windows Search—for exampl...

Fix BitLocker Error 404 Not Found After a Windows Update

After a Windows update, some users see a BitLocker error that reads something like "Error...

How to Fix Windows Security Connection Refused Error
You open Windows Security and see a "Connection refused" error when trying to update virus defini...