SMB 1.x MiniRedirector (mrxsmb10) Service Defaults in Windows 11

Implements the SMB 1.x (CIFS) protocol. This protocol provides connectivity to network resources on pre-Windows Vista servers.

The SMB 1.x MiniRedirector service exists only in:

Default Settings

Startup type: Automatic
Display name:SMB 1.x MiniRedirector
Service name:mrxsmb10
Service type:filesys
Error control:normal
Group:Network
Path:%SystemRoot%\system32\DRIVERS\mrxsmb10.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mrxsmb10

Default Behavior

SMB 1.x MiniRedirector is a file system driver. In Windows 11 it starts automatically during the operating system startup. If SMB 1.x MiniRedirector fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the mrxsmb10 service startup failure.

Dependencies

SMB 1.x MiniRedirector cannot be started, if the SMB MiniRedirector Wrapper and Engine service won't start.

Restore Default Startup Configuration of SMB 1.x MiniRedirector

Before you begin doing this, make sure that all the services on which SMB 1.x MiniRedirector depends are configured by default and function properly. See the list of dependencies above.

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config mrxsmb10 start= auto
sc start mrxsmb10

3. Close the command window and restart the computer.

The mrxsmb10 service is using the mrxsmb10.sys file that is located in the C:\Windows\system32\DRIVERS directory. If the file is removed or corrupted, read this article to restore its original version from Windows 11 installation media.