SMB MiniRedirector Wrapper and Engine (mrxsmb) Service Defaults in Windows 7

Implements the framework for the SMB filesystem redirector.

Default Settings

Startup type:Manual
Display name:SMB MiniRedirector Wrapper and Engine
Service name:mrxsmb
Service type:filesys
Error control:normal
Group:Network
Path:%SystemRoot%\system32\DRIVERS\mrxsmb.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mrxsmb

Default Behavior

SMB MiniRedirector Wrapper and Engine is a file system driver. In Windows 7 it won't be started if the user doesn't start it. If SMB MiniRedirector Wrapper and Engine fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the mrxsmb service is not running because of the error.

Dependencies

SMB MiniRedirector Wrapper and Engine is unable to start, if the Redirected Buffering Sub Sysytem service is stopped or disabled.

If SMB MiniRedirector Wrapper and Engine is stopped, the following services cannot start:

Restore Default Startup Configuration for SMB MiniRedirector Wrapper and Engine

Before you begin doing this, make sure that all the services on which SMB MiniRedirector Wrapper and Engine 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 command below, paste it into the command window and press ENTER:

sc config mrxsmb start= demand

3. Close the command window and restart the computer.

The mrxsmb service is using the mrxsmb.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 7 installation media.