so first thing to confirm is you have upgraded to the latst BIOS/ME FW from your OEM, Verisign upgraded there certs about 8 months ago and we had to upgrade our certs in the FW - ther shoudl be a vPro article posted her about it. If you still ahve problems I will need to knwo more details on the following
1. What veriosnof SCS?
2.What OEM platform
3. Waht is the BIOS
4. What is the MEFW - its typically a splash screen at boot time
I also have same this error.But I used the PSK mode.
And I used SCS 5.3 AMT 3.2.
The SOAP connection with connection parameter set #2 failed: AMT Connection Error: SOAP Error : "getFullCoreVersion: SOAP Unknown error".