When you receive a meeting invitation that's sent from a person who is outside your organization in Office 365, the invitation is displayed as a regular email message on a BlackBerry smartphone. In this situation, you can't accept the meeting invitation.
This issue occurs if automatic processing of invitations from external senders is disabled in Office 365. To fix this issue, turn on the Automatically process requests and responses from external senders setting. To do this, follow these steps:
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