Windows cannot find MicrosoftSecurityApp.exe [Fix]

If you cannot find MicrosoftSecurityApp.exe in Windows, this article will help you. MicrosoftSecurityApp.exe is part of the Microsoft Defender application, available in the Microsoft Store. It’s important to note that the Microsoft Defender app is only available to users with a Microsoft 365 Personal or Family subscription and is not tied to Windows’ built-in security app.

Fix Windows cannot find MicrosoftSecurityApp.exe

If you get a Windows cannot find MicrosoftSecurityApp.exe error when you try to run the Microsoft Defender application, follow these suggestions:

Refresh Defender-related services

Use Registry Editor to repair

Clean install the Microsoft Defender application.

Now, let’s take a look at these in detail.

1]Update Defender related services

First refresh the services related to Microsoft Defender and Microsoft Security. Refreshing services in Windows restarts specific software. Here’s how to do it:

Click Start, click Search Services, and then press Enter.

Scroll down and search for the following services related to Defender and Microsoft Security.

• Windows Defender Service
• Windows Defender Network Inspection Service
• Windows Defender Threat Protection Service
• Windows Defender Firewall
• Web thread defense service
• Network Threat Defense User Service
• Windows Security Service

Right-click on the service and select Refresh.

See if this helps.

3] Clean installation of Microsoft Defender application

Finally, use Windows PowerShell to uninstall Microsoft Defender and then reinstall it. Here’s how to do it:

Click Start, search for Windows PowerShell, and click Run as administrator.

Type the following command and press Enter:

Get-appxPackage-alluser Microsoft.6365217CE6EB4|Remove-appxPackage

Once completed, restart your PC and install the Microsoft Defender app from the Microsoft Store.

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