• You cannot start MSMQ Service with the following entry in the Application Event Log: The Message Queuing service cannot start. The internal private queue ‘admin_queue$’ cannot be initialized. If the problem persists, reinstall Message Queuing. Error 0xc00e0001.
• You cannot install MSMQ with the following error: Attempt to install Message Queuing Server failed with error code 0x80070643. Fatal error during installation. The following features were not installed: Message Queuing Services/Message Queuing Server.

  

For me, the solution was to delete the Registry key KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSMQ, then try the installation again.

See also:

• MSMQ won’t install on Windows 2008 with a Fatal Error (0x80070643)

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