Cannot insert machines on ConfigMgr Primary

Has anyone seen this issue before?

Moved to new hardware for COnfigMgr - same name, new OS (Server 2012 R2) and App Portal cant insert machines... I suspect I am missing something in IIS on the new hardware, but, to me, it looks right. But thats a lack of sleep and too many Monsters. :)


(i have a case open with Flexera, but its Sunday so... yah know, this was worth a shot) :)


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Dataset returned from SCCM_SERVER was invalid System.InvalidOperationException: Client found response content type of 'text/html', but expected 'text/xml'.
The request failed with the error message:
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The page cannot be displayed because an internal server error has occurred.
--.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.InvokeAsyncCallback(IAsyncResult result)