batcmd.com Windows 10 Services

Windows Defender Antivirus Mini-Filter Driver - Windows 10 Service

Windows Defender Antivirus On-Access Malware Protection Mini-Filter Driver.

This service also exists in Windows 8.

Startup Type

Windows 10 version Home Pro Education Enterprise
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Default Properties

Display name:Windows Defender Antivirus Mini-Filter Driver
Service name:WdFilter
Type:filesys
Path:%WinDir%\system32\drivers\WdFilter.sys
Error control:normal
Group:FSFilter Anti-Virus

Default Behavior

The Windows Defender Antivirus Mini-Filter Driver service is a file system driver. If Windows Defender Antivirus Mini-Filter Driver fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the WdFilter service has failed to start.

Dependencies

Windows Defender Antivirus Mini-Filter Driver is unable to start, if the FltMgr service is stopped or disabled.

If Windows Defender Antivirus Mini-Filter Driver is stopped, the Windows Defender Network Inspection System Driver service fails to start and initialize.

Restore Default Startup Type for Windows Defender Antivirus Mini-Filter Driver

Automated Restore

1. Select your Windows 10 edition and release, and then click on the Download button below.

2. Save the RestoreWindowsDefenderAntivirusMiniFilterDriverWindows10.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the WdFilter.sys file exists in the %WinDir%\system32\drivers folder. If this file is missing you can try to restore it from your Windows 10 installation media.