Server: Exchange 2007 SP3 Client: Outlook 2010 SP1 I have created the shared mailbox and given readers permission to my mailbox. I have added that shared mailbox as an additional mailbox in my outlook. When I try to access that shared mailbox, it says "unable to expand the folders" and I am not able to access the shared mailbox. My outlook is not in cache mode..its' in online mode only. I have downloaded full address book. I have waited for 24 hours..still it haven't. Recreated profile..Rebooted..Nothing happening..! But after 2 or 3 days..I can able to access the shared mailbox and it started working. Question: Why it is taking 2 or 3 days to work? Is that replication issue in server? If so how to check the same? ThanksFunnyghost

Hi, Base on my experience, this kind of issue may be caused by Outlook Addins. The permission is added into Mailbox, not on AD permission. So it might not related to AD replication. If it is able to be reproduced, please try in OWA to see if it has the same issue. and then run Get-MailboxPermission to verify it. Hope it is helpful. Fiona Liao TechNet Community Support