KtmRm for Distributed Transaction Coordinator Service Defaults in Windows 7

Coordinates transactions between the Distributed Transaction Coordinator (MSDTC) and the Kernel Transaction Manager (KTM). If it is not needed, it is recommended that this service remain stopped. If it is needed, both MSDTC and KTM will start this service automatically. If this service is disabled, any MSDTC transaction interacting with a Kernel Resource Manager will fail and any services that explicitly depend on it will fail to start.

Default Settings

Startup type:Manual
Display name:KtmRm for Distributed Transaction Coordinator
Service name:KtmRm
Service type:share
Error control:normal
Object:NT AUTHORITY\NetworkService
Path:%SystemRoot%\System32\svchost.exe -k NetworkServiceAndNoImpersonation
File:%SystemRoot%\system32\msdtckrm.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\KtmRm
Privileges:
  • SeChangeNotifyPrivilege

Default Behavior

KtmRm for Distributed Transaction Coordinator is a Win32 service. In Windows 7 it won't be started if the user doesn't start it. When the KtmRm for Distributed Transaction Coordinator service is started, it is running as NT AUTHORITY\NetworkService in a shared process of svchost.exe. Other system components, such as drivers and services, may run in the same process. If KtmRm for Distributed Transaction Coordinator 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 KtmRm service is not running because of the error.

Dependencies

KtmRm for Distributed Transaction Coordinator is unable to start, if at least one of the following services is stopped or disabled:

Restore Default Startup Configuration for KtmRm for Distributed Transaction Coordinator

1. Select your Windows 7 edition and service pack, and then click Download.

2. Save the Win7_KtmRm_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The KtmRm service is using the msdtckrm.dll file that is located in the %WinDir%\system32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.