Update mailbox permission for mailbox failed

Question

I tried to add a user to a shared mailbox as "Send as", but I got the following error:&nbsp;Update mailbox permission for mailbox failed&nbsp;Any suggestions to fix my problem?&nbsp;

vasilmichev · Answer

Try again, it's probably some temporary glitch. You can also try via a different interface - if you have tried in the admin portal, use PowerShell or vice versa.

deleted · Answer

Hi,&nbsp;unfortunately the problem is still there, but I haven't tried it with Powershell yet. Do you know the command to give a user the permission to "send as" for shared mailboxes?&nbsp;I couldn't really find anything in the command in the documentation.

vasilmichev · Answer

The cmdlet you need to use is:&nbsp;Add-RecipientPermission sharedmailbox -Trustee user@domain.com -AccessRights SendAs

marcus anthony · Answer

This happened to me, but it was indeed just a temporary glitch. After about&nbsp;3 minutes, the error was gone when I tried again.

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Update mailbox permission for mailbox failed

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