'Unable to remove mailbox permissions through PowerShell on Exchange 2010 SP1
Using Exchange 2010 SP1 remote powershell, I added permissions for a user using the Add-MailboxPermission cmdlet. Here's the command I used to add permissions...
Add-MailboxPermission user_mailbox -User admin_user -AccessRights FullAccess -InheritanceType All
It worked great. Once I ran it, admin_user had access to user_mailbox's mailbox. Now, when I try to remove those permissions, it fails. Here's the command I used to remove permissions...
Remove-MailboxPermission user_mailbox -User admin_user -AccessRights FullAccess -InheritanceType All
And here's the error it gave...
Object reference not set to an instance of an object.
+ CategoryInfo : NotSpecified: (:) [Remove-MailboxPermission], Nu
llReferenceException
+ FullyQualifiedErrorId : RemoteHostExecutionException
I'm not sure what this exception means so I'm not sure where to look. Is there any other way to remove mailbox permissions through remote powershell?
Solution 1:[1]
Try the following
Get-MailboxPermission -Identity "user_mailbox" -User "user_with_permission_to_remove" | Remove-MailboxPermission
Solution 2:[2]
I had a corrupt mailbox permission with a user on Exchange 2013. A user had permission to a mailbox using inherited AND specific permissions. Just doing a Remove-MailboxPermission wasn't quite enough. I had to get the permissions then remove the permissions. It removed the corrupted one and skipped the inherited one.
Get-MailboxPermission -identity | Where {$_.user -eq ""} | Remove-MailboxPermission.
Worked like a charm.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | |
| Solution 2 | Dianne Millen |