Fix 'Windows Defender Not Recognized' Error in Command Prompt
When you type MpCmdRun or Windows Defender in Command Prompt and see
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listMicrosoft Store Restore Checklist for Developers
When developing apps for the Microsoft Store, you may encounter situations where apps fail to ins...
Chrome Service Unavailable: Fix Sync Not Working
You open Chrome expecting your bookmarks, passwords, and settings to be synced across devices, bu...
How to Fix Windows Update 502 Bad Gateway Error
You're trying to run Windows Update and you get a 502 Bad Gateway error. The update check fails, ...
Fix BitLocker Auto Unlock Not Working After Update
After a Windows update, you might find that BitLocker auto unlock stops working on your external ...
How to Configure Windows Search to Exclude Specific Folders
If Windows Search returns results from folders you'd rather keep out of its index—like backups, t...
Topic paths
Quick titles
Resolve Access Denied in CMDConfigure Windows Defender: Settings GuideHow to Resolve Chrome Profile Version ErrorMicrosoft Teams File Locked: Troubleshooting ChecklistUbuntu OneDrive Config File ExampleFix Outlook Data File Access After Password ChangeFix Windows Update 404 Not Found Error: Practical StepsWindows Terminal Cache Not Updating? Here's the Fix