# Are Exchange Server Subscription Edition (SE) calendar connections supported?

Exchange Server Subscription Edition (SE) calendar connections are supported.

The only known limitation is that [Attachments](/developers/api/attachments/index.md) added to Partner Events (events that your application creates) are not rendered on the external calendar side.

Please see our guides on connecting on-prem Exchange calendars via [Individual Connect](/calendar-users/connecting-to-exchange/index.md) and [Enterprise Connect](/calendar-admins/enterprise-connect-office365-exchange/index.md) for more information on how to connect, or contact [support@cronofy.com](mailto:support@cronofy.com) for further assistance.


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