Update: The issue mentioned in this article has been resolved in October 2022 SU (or later). Please see this document for known issues with Extended Protection.
We’ve released an update to the scri...
Updated Feb 15, 2024
Version 3.0
Blog Post
1 MIN READ
An update to the Exchange Server Extended Protection script is now available
You have an Exchange Server version, in your environment, that is less than the required versions. Therefore, EP should not be enabled in your environment.
"Extended Protection is supported on Exchange Server 2013 CU23 and Exchange Server 2016 CU22 and Exchange Server 2019 CU11 or later with the August 2022 Security Updates installed."
Also review the support table where it shows: Any other version, Any other CU, Any other SU - EP Supported: No.
You would have a hard stop when you reached this point in the document (toward the beginning of the link below):
"You must ensure all your Exchange servers are on the required CU and have the August 2022 SU (or later) before you proceed further."
https://aka.ms/ExchangeEPDoc