Windows Defender Crashing

Why Windows Defender is Crashing?

Windows Defender Crashing on a computer if there is another conflicting antivirus program running on your computer. It occurs when the Windows Defender application is launched, or a scan is started. However, you can solve this crash issue by following a few simple steps which are given below.       

Why Windows Defender Crashes on your Computer?

If the Windows Defender crashes your computer, follow these steps to resolve it. This crash issue is caused by a virus or malware on your computer. To remove the malware, download the Safety Scanner application from the manufacturer’s official site.

• Install the Safety Scanner on your computer and run it.
• This application automatically deletes Potentially Unwanted Programs (PUPS) from your computer.
• Now, delete the msert.exe file to uninstall Safety Scanner from your computer.
• Try running a Windows Defender scan. The crash issue should be resolved. If it persists, contact our tech support team.

• First, check if the services related to the Windows Defender Crashing has started.
• To check it, follow the instructions given below.
• Open the Run wizard on your Windows system.
• Type the services.msc keyword in the given text field.
• Press the Enter button.
• Look for the  Windows Defender option in the services list.
• Check if the Automatic option is selected in the Startup type section.
• The list of Windows Defender features will be displayed on the screen.
• Windows Defender Advanced Threat Protection Service.
• Windows Defender Antivirus Network Inspection Service.
• Windows Defender Antivirus Service.
• Windows Defender Firewall.
• Windows Defender Security Center.
• To check if the Windows Defender starts, restart your computer.
• After that, check if the issue is resolved. If the issue persists, then use the Clean my PC Registry Fix method to resolve this problem.

• Make sure that you have logged in as the Admin user on your computer.
• Launch the Run command on your computer.
• Type the regedit command in the given entry field and press Enter.
• Now the Registry Editor of your system will appear on the screen.
• Go to the Windows Defender registry in the editor list.
• Choose the Permission option by right-clicking the Windows Defender folder.
• Click the  Advanced button on the Permission screen.
• Select  Change Enter the object name to select Administrator OK.
• Enable the Replace owner on subcontainers and objects box option by clicking the checkbox beside it and click the Apply button.
• Now, click Administrators Full Control OK OK.
• Close the existing registry editor and download the DefenderFix.zip file on your computer.
• Install the downloaded defender registry on your computer by following the on-screen Windows Defender Crashing instructions.
• Click the Yes button when prompted while importing the changes.
• Restart your Windows system and check if the issue is resolved.
• If the issue persists, contact the Windows Defender technical support team to fix it.

• Check if your system contains an antivirus software other than Windows Defender.
• If so, uninstall the other antivirus software from your system using the antivirus removal tool.
• If it does not work, then try to update your Windows Defender manually, and check if the issue is resolved.
• After that, restart your computer, and check if the issue is resolved.
• If Windows Defender Crashing occurs, then contact Windows technical experts to fix this issue.