End of Life Reminder (Oct 31, 2025): Intel® SGX PCS API versions 2 and 3

[Scott_R_Intel]

Dear Intel^® SGX Customers,

As previously communicated in Q4, 2022, Intel will be End of Life (EOL)-ing the deprecated API version 2 and version 3 for the Intel^® SGX Provisioning Certification Service (Intel PCS) no later than October 31, 2025. Once this action is complete, these versions will no longer be available for use.

Since the original deprecation communication, the listed API versions are returning a deprecation message using HTTP Headers.

For details on what changes occurred between versions and how to migrate, please review:

• V2 to V3 Migration Guide
• V3 to V4 Migration Guide

Your Action May be Required:

Current consumers of the deprecated API versions should work to transition to using Intel PCS API version 4 as soon as possible.

Additional Details:

Detailed API documentation can be found here.

Please note that Intel has made significant updates to our TCB recovery / Attestation guidance and policies in the last 6 months. For additional details, please see the Remote Attestation Process section of the Trusted Computing Base Recovery technical paper. To support these policy changes, Intel also updated the capabilities of our security services.

Thank You,

Intel SGX & TDX Services Team