Symptoms

When you open Disk Management MMC console (diskmgmt.msc), one of the following error messages may occur:

• The Logical Disk Manager service is disabled. A connection cannot be established
• Unable to connect to Logical Disk Manager service.
• The dependency service or group failed to start.
• The specified service does not exist as an installed service.
• The dependency service does not exist or has been marked for deletion.

Resolution

This happens if one of the following services are missing in the system.

• Logical Disk Manager
• Logical Disk Manager Administrative Service

To restore the missing services, use diskmgmt.reg code available at the bottom of this page and create a reg file with it. Then, right-click the file and choose Merge. Click Yes to confirm. Restart Windows and see if you're able to launch Disk Managemt MMC successfully.

diskmgmt.reg

{code class="brush: powershell"}Windows Registry Editor Version 5.00 ;REG fix to reinstate Logical Disk Manager service ;Created on February 03, 2007 by Ramesh Srinivasan ;http://www.winhelponline.com [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\dmadmin] "DependOnService"=hex(7):52,00,70,00,63,00,53,00,73,00,00,00,50,00,6c,00,75,00,\ 67,00,50,00,6c,00,61,00,79,00,00,00,44,00,6d,00,53,00,65,00,72,00,76,00,65,\ 00,72,00,00,00,00,00 "Type"=dword:00000020 "Start"=dword:00000003 "ErrorControl"=dword:00000001 "ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\ 74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,64,\ 00,6d,00,61,00,64,00,6d,00,69,00,6e,00,2e,00,65,00,78,00,65,00,20,00,2f,00,\ 63,00,6f,00,6d,00,00,00 "DisplayName"="Logical Disk Manager Administrative Service" "ObjectName"="LocalSystem" "Description"="Configures hard disk drives and volumes. The service only runs for configuration processes and then stops." [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\dmadmin\Enum] "0"="Root\\LEGACY_DMADMIN\\0000" "Count"=dword:00000001 "NextInstance"=dword:00000001 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\dmadmin\Parameters] "EnableDynamicConversionFor1394"=dword:00000000 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\dmserver] "DependOnService"=hex(7):52,00,70,00,63,00,53,00,73,00,00,00,50,00,6c,00,75,00,\ 67,00,50,00,6c,00,61,00,79,00,00,00,00,00 "Type"=dword:00000020 "Start"=dword:00000003 "ErrorControl"=dword:00000001 "ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\ 74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\ 00,76,00,63,00,68,00,6f,00,73,00,74,00,2e,00,65,00,78,00,65,00,20,00,2d,00,\ 6b,00,20,00,6e,00,65,00,74,00,73,00,76,00,63,00,73,00,00,00 "DisplayName"="Logical Disk Manager" "ObjectName"="LocalSystem" "Description"="Detects and monitors new hard disk drives and sends disk volume information to Logical Disk Manager Administrative Service for configuration. If this service is stopped, dynamic disk status and configuration information may become out of date. If this service is disabled, any services that explicitly depend on it will fail to start." [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\dmserver\Parameters] "ServiceDll"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,\ 00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,\ 64,00,6d,00,73,00,65,00,72,00,76,00,65,00,72,00,2e,00,64,00,6c,00,6c,00,00,\ 00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\dmserver\Enum] "0"="Root\\LEGACY_DMSERVER\\0000" "Count"=dword:00000001 "NextInstance"=dword:00000001 {/code}