Checklists for software errors, setup, and tool workflows.

How to Enable Windows Defender After It Failed to Start

If Windows Defender won't start, you may see an error like "This app has been turned off" or "Win...

How to Fix OneDrive Error 0x8004de40

If you see error code 0x8004de40 when trying to sign in or sync files in OneDrive, it usually mea...

Fix OneDrive Not Signing In Due to Network Firewall

You try to sign in to OneDrive, but it fails with a network error. Often, a firewall—on your comp...

Fix Windows Update Module Not Found Error: Tool Usage & Repair

If you see an error message saying 'Windows Update module not found' or 'wuapi.dll is missing', W...

OneDrive Invalid Configuration Sync Issue Fix

Understanding the Problem

You open OneDrive and see an error like "Invalid configuration"...