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chazzwillie15

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What could cause all of our shared mailboxes to have "Cannot expand folder?"

We have a multi-domain office 365 account with multiple shared mailboxes on different domains with the same prefix.

eg. ap@yahoo.com, ap@yahoosistercompany.com, ap@yahooparentcompany.com

The issue is anytime we try to do these types of mailboxes and then add the mailbox to out look we get the error cannot expand folder.

Any ideas?
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sunnyc7
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You would have to give full mailbox permission to the shared mailbox.
there's a guide here.
https://community.office365.com/en-us/f/148/t/167084

hth
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chazzwillie15

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