WebDav Client Redirector Driver (MRxDAV) Service Defaults in Windows 10

Network Redirector that provides WebDAV file access for the WebClient service.

Default Settings

Startup type:Manual
Display name:WebDav Client Redirector Driver
Service name:MRxDAV
Service type:filesys
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MRxDAV

Default Behavior

WebDav Client Redirector Driver is a file system driver. In Windows 10 it is starting only if the user, an application or another service starts it. If WebDav Client Redirector Driver fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the MRxDAV service has failed to start due to the error.


WebDav Client Redirector Driver cannot be started under any conditions, if the Redirected Buffering Sub System service is disabled.

While WebDav Client Redirector Driver is stopped, the WebClient service cannot be launched.

Restore Default Startup Configuration for WebDav Client Redirector Driver

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_MRxDAV_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The MRxDAV service is using the mrxdav.sys file that is located in the %WinDir%\system32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.