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Albert WidjajaFlag for Australia

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Unable to remove user account from Exchange Server 2010 Mailbox

People,

I'm trying to delete old account from the existing shared mailbox using Exchange Management Console (2010 SP3), but somehow I always end up with this error:

Summary: 1 item(s). 1 succeeded, 0 failed.
Elapsed time: 00:00:00

DOMAIN\admin1
Completed

Warning:
Can't remove the access control entry on the object "CN=Receptionist,OU=Users,DC=DOMAIN,DC=com" for account "DOMAIN\admin1" because the ACE doesn't exist on the object.

Exchange Management Shell command completed:
Remove-MailboxPermission -Identity 'CN=Receptionist,OU=Users,DC=DOMAIN,DC=com' -User 'DOMAIN\admin1' -InheritanceType 'Descendents' -AccessRights 'FullAccess'

Elapsed Time: 00:00:00

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Can anyone please assist me with this issue ?

Thanks.
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Albert Widjaja
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I've tried with

-InheritanceType 'All' -AccessRights 'FullAccess' -Deny

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but still no good, it ends up with the same issue.
Could you try to access the mailbox using the exchange management interface rather than using powershell cmdlets?
Already did, hence I got the first error message.
Is domain\admin1 actually listed as having direct access versus having inherited access because of another group of which idomain\admin1 is a member?
how to determine that ?

I'm not sure what you mean...
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arnold
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Hi Ya Li,
this is another normal mailbox not a room:\calendar
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OK, I'll try that on Monday when I'm in the office.

So after that I can remove the account permission ?
Hi JoeNSW,

somehow the trick didn't work.

I've granted the Exchange Trusted Subsystem Full permission on the account but still it didn't work as expeected with the same error message.
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Yes from old exchange server 2007 to 2010.

But for the AD domain it remains one.
After the source account  is migrated with sIDHistory the account gets a new objectSID and a sIDHistory. The mailbox security descriptor for the target mailbox only contains the sIDHistory of the account but NOT the new objectSID. Remove-MailboxPermission only make a lookup for the objectSID of the account to be removed but it doesn't check if this account has a sIDHistory

to solve the problem please install Exchange 2007 Management tools and try to remove it from there

Good Luck
@mohammad: so installing the Exchange 2007 management console only in my spare laptop, is that safe in my current AD / production environment ?
yes its just the management console it will not effect on your current system
somehow I still can not remove the user account from using the Exchange Server 2007 management console ?
Thansk !