Set-MailboxFolderpermission - mailbox doest exist

Question

Hello guys, i need to get more about this issue:

I ve got a shared mailbox in Exchange Online and i need to change mailbox folder permission for user ABC. When i call set-mailboxfolderpermission -identity %sharedmbx-emailaddress% -user %ABC_useremailaddress% -accessrights Editor(or any other type of rights). Powershell return: The specified mailbox "ABC" doesn't exist. It´s very weird, because i can remove/add, but i am not able to change...

I tried replace %emailaddress% with displayname, guid etc, but everything return same result :-(

Do you have any ideas, what´s wrong, or its by design in Exchange Online?
We have many scripts, which works with set-mailboxfolderpermission cmdlet
Cmdlet description says its applied to Exchange Online

Thanks for advice

Answer 1

Hi @Daniel Hnyk

Is your environment a cloud-only one?

We use Set-MailboxFolderPermission cmdlet to modify folder-level permissions for users in mailboxes. This cmdlet differs from the Add-MailboxFolderPermission cmdlet in that it modifies existing permission entries.

If you didn't add the mailbox folder permission for the user previously, use Add-MailboxFolderPermission firstly

Add-MailboxFolderPermission -Identity ******@contoso.com:\Marketing -User ******@contoso.com -AccessRights Owner  

Then if you want to edit the permission, use below command

Set-MailboxFolderPermission -Identity ******@contoso.com:\Marketing -User ******@contoso.com -AccessRights Editor  

Please also make sure the account you run the command has the right permssion/role list below. Add the right permission/roles for your account if it miss any
Get-ManagementRole -Cmdlet xxx-xxx

In addition, have you tried using OWA to verify the configuration again, can you use OWA to change the mailbox foler permission for that user?

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