However, the recent updates have turned Microsoft Defender into a security product that directly competes with paid antivirus software. I hope this brief guide will help you solve the problem if you unable to start (stop) the threat service on Windows 10.Antivirus has always been a part of Windows. If nothing helps, check and repair the integrity of Windows image and system files with the commands:ĭISM /Online /Cleanup-Image /RestoreHealth In this case, try to check for new updates and install them via Settings -> Update & Security -> Windows Update -> Check for updates or use PowerShell to install the latest updates. In rare cases, Microsoft Defender Antivirus may stop working after installing monthly Windows 10 updates. Restart Microsoft Defender and check if the problem is fixed. To do this, open a command prompt as administrator and run the following commands: Try to re-register the Windows Defender libraries. In Windand newer builds, the GPO section with Defender settings is called Microsoft Defender Antivirus. The status of the services can be checked using PowerShell: Microsoft Defender Antivirus Service ( WinDefend).Microsoft Defender Antivirus Network Inspection Service ( WdNisSvc).Windows Defender Advanced Threat Protection Service ( Sense).

Open the Services Management Console ( services.msc) and make sure the following items are in the list of services: In order the Microsoft Defender to work correctly on Windows 10, you need to check several services. Enable Microsoft Defender Antivirus Services If you don’t need a third-party antivirus, disable or uninstall it. Please decide which antivirus you want to use – third-party or Microsoft Defender. Microsoft Defender Antivirus is automatically disabled if a third-party antivirus app is installed on your computer. Microsoft Defender Not Working Due to 3 rd Party AntivirusĬheck if you have a third-party antivirus installed on your computer that prevents Microsoft Defender from working. Check That the Microsoft Defender in Enabled in Group Policy.Enable Microsoft Defender Using Registry on Windows 10.Enable Microsoft Defender Antivirus Services.Microsoft Defender Not Working Due to 3 rd Party Antivirus.

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