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Sunday, November 23, 2014

Error : “The assembly “Microsoft.SystemCEnter.VirtualMachineManager.UIAddIns.dll” referenced by the add-in assembly “Amazon.Scvmm.AddIn” Could not be found in the add-in package”


We encountered the following error message when trying to import Console-Add In :- AWS Add-in for Microsoft System Center.

We are using System Center Virtual Machine Manager 2012 R2


Encountered an error message when trying to import.

“The assembly “Microsoft.SystemCEnter.VirtualMachineManager.UIAddIns.dll” referenced by the add-in assembly “Amazon.Scvmm.AddIn” Could not be found in the add-in package”



1. Close the VMM Administrator Console

2. Right click VMM Administrator Console and select “run as administrator”.


3. Try import the console Add-in again.

That should fix the problem.


  1. This resolution leads to a restriction of using "Run as administrator" option every time VMM Console is started.
    Not starting VMM Console with this option can also abruptly stop the VMM Console.

    Create an empty text file in folder-
    "C:\Program Files\Microsoft System Center 2012\Virtual Machine Manager\bin\AddInPipeline\Addins"

    Adding new file to the folder forces VMM to reload its cache, and then it will once again load the add-ins properly.

  2. Thanks for sharing. If you have problem with missing dll-file you just need to download new file here and add it to the system.

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