How to solve SGX Exception 4012?

Question

I have a SGX application that runs as a server

When i run the server i get error

org.whispersystems.contactdiscovery.enclave.SgxException: init_quote_before_create: 0x4012

checking this url https://github.com/signalapp/ContactDiscoveryService/blob/main/service/src/main/java/org/whispersystems/contactdiscovery/enclave/SgxException.java

i learned that the code 4012 means EPID Provisioning failed due to platform not recognized by backend server

but why? how to solve it?

I have install the sgx driver 2.11 on ubuntu server 22 and enabled sgx in BIOS/UEFI

My CPU supports SGX1 and 2 Intel(R) Xeon(R) Silver 4310

cpuid command output:

SGX1 supported                           = true

SGX2 supported                           = true

When i execute lsmod | grep sgx i get only this:

isgx                   57344  0

The SPid and APIKey are correct for intel API to work.

I thanks you help in advance