How to set mailbox folder permissions via Graph API

Question

Hello dear readers,

Lately I am running into issues with the graph API.

I want to update a script wish is using Connect-AzureAD and Connect-ExchangeOnline to graph API.
In this script I am updating the Mailbox folder Permission like this:

Set-MailboxFolderPermission -Identity ******@mail.com:\Calendar -User Default -AccessRights LimitedDetails

After some research and testing, I couldn't get it running with Graph API. Also, I asked ChatGPT for some help which told me, that currently, the Microsoft Graph API does not expose an endpoint to set mailbox folder permissions like the one defined in the initial PowerShell script (Set-MailboxFolderPermission).

Will Microsoft continue the Connect-AzureAD and Connect-ExchangeOnline modules, will this function be implemented in Graph, are there workarounds?

I would love to get some nice responses,
Best regards

Answer 1

For once, ChatGPT is correct - there are currently no Graph API endpoints to manage Exchange mailbox (folder) permissions. You have to use PowerShell for the time being, this is the only supported method. Microsoft is evaluating other options, and as soon as they set of a given approach, they will post something on the EHLO (and Graph) blog.

In any case, the Exchange Online PowerShell module will continue to be supported.