Support for Microsoft Exchange Server Subscription Edition (SE) in Identity Manager (4380491)

Microsoft released the Exchange Server Subscription Edition (SE) in July 2025 and announced the end of support (EOL) for Exchange Server 2019 in October 2025. This raised questions for Identity Manager customers about compatibility and future support for Exchange SE.

Currently, Identity Manager’s Exchange 2019 connector can be used to manage Exchange SE environments. Customers upgrading from Exchange 2019 to Exchange SE will continue to see their environment displayed as Exchange 2019 within Identity Manager tools, but functionality remains intact.

Future Microsoft roadmap changes may affect connector compatibility, specifically around the deprecation of Remote PowerShell (RPS) and the introduction of a new RESTful Admin API.

• Microsoft announced Exchange SE with a shortened transition period and EOL of Exchange Server 2019 (October 2025).

• Exchange SE RTM (initial release) is largely equivalent to Exchange 2019 CU15, so existing tools and connectors continue to function.

• However, Microsoft’s roadmap introduces:

  1. Deprecation notice for Remote PowerShell (no firm removal date yet).

  2. New RESTful Admin API (first introduced with Exchange SE CU1).

These upcoming changes mean that the existing Exchange 2019 connector will eventually need to be replaced with a new connector based on the RESTful Admin API.

• Current compatibility:

  • Customers can upgrade from Exchange 2019 CU14/CU15 to Exchange SE using the in-place upgrade path.
  • Identity Manager’s Exchange 2019 connector works with Exchange SE in supported versions of Identity Manager.
  • No major functionality gaps have been identified at this time.

• Current Microsoft Recommendation:
  

  • Customers running Exchange 2019 should perform an in-place upgrade to Exchange SE (CU14 or CU15 servers).
  • This approach is considered low-risk, as Exchange SE RTM does not introduce major changes compared to Exchange 2019 CU15.
  • For more details, see Microsoft’s guidance on upgrading to Exchange SE:
    • Exchange Server SE RTM
    • Exchange Server roadmap update

• Future compatibility:

  • Once Microsoft removes Remote PowerShell support, a new Identity Manager connector based on the Exchange SE RESTful Admin API will be required.
  • One Identity is actively monitoring Microsoft’s roadmap and will develop and release the new connector accordingly.
  • Customers will need to upgrade to an Identity Manager version that includes the new API-based connector once RPS is no longer supported.