SSMS connecting to SSIS with message Failed to retrieve data for this request. (Microsoft.SqlServer.Management.Sdk.Sfc)

Hi

Full message below but basically I have tried all the DCOM things in this article and still no joy 

https://social.msdn.microsoft.com/Forums/sqlserver/en-US/8833d78b-a4c9-4743-ad0b-a3d17bdd3598/connecting-to-ssis-through-ssms-without-built-in-administrator?forum=sqlsetupandupgrade

Using Windows Server 2012 & SQL Server 2012 Enterprise

I'm a Domain Admin and SQL sysadmin so not sure what the issue is.

Any help greatly appreciated.

Rich

TITLE: Connect to Server
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Cannot connect to server-x

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ADDITIONAL INFORMATION:

Failed to retrieve data for this request. (Microsoft.SqlServer.Management.Sdk.Sfc)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&LinkId=20476

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The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) (Microsoft.SqlServer.DTSRuntimeWrap)

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The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) (Microsoft.SqlServer.DTSRuntimeWrap)

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BUTTONS:

OK
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