Recently we have had to move mailboxes from on Information Store to a new one. We have almost completed the process when it was brought to my attention that users who are assigned access to mutiple mailboxes cannot open secondary resource mailboxes. For example, if John Doe(JDoe@xyz.com) open his profile and then attempts to open the Help Desk (email@example.com) he gets the error "Unable to expand the folder. Microsoft Office Outlook could not access the specified folder location." In this case both mailboxes have been moved to the new information store. But if John attempts to open a resiource mailbox with the same exact AD permissions in the old information store it opens right away without issue.
This article describes our problem and the solution to our problem. I do not know why or how this setting got turned off during the mailbox move. We have about 500 resource mailboxes and we need to do as quickly as possible. Is there any way to do this with out creating a profile for each box and changing the settings?
Please let me know if you require any additional information.