Fix Windows Defender Module Not Found Error 0x80070643
You see "Windows Defender module not found" with error code 0x80070643
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Update Token Expired Permission Denied
If you see a Windows Update error saying "token expired" or "permission denied," it usually means...
How to Reset Windows Search Using Command Prompt
If Windows Search stops returning results, takes too long, or shows errors, resetting the search ...
Fix OneDrive Sync Service Unavailable in Office 365
If you see 'OneDrive sync service unavailable' when trying to sync files in Office 365, the sync ...
Fix Windows Defender Version Mismatch After Update
After a Windows update, you might see a message that Windows Defender (Microsoft Defender Antivir...
How to Fix Task Scheduler Module Not Found Error
When you open Task Scheduler and see a 'module not found' error, it usually means a scheduled tas...
Topic paths
Quick titles
Teams Permission Denied Error TroubleshootingSet PowerShell Execution Policy for All UsersHow to Fix OneDrive Blank ScreenWindows Activation Stuck on Loading Registry – Fix GuideViewing Task Scheduler History in Windows 10Fix Chrome DNS Error Using chrome://net-internalsFix OBS Virtual Camera Black ScreenHow to Set the PowerShell Module Path