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Consider the following scenario:

  • Microsoft Office 365 users (user A and user B) both have Microsoft Lync 2013 installed on their computers.

  • User A is in an organization that is not federated with user B's organization.

  • Neither user can enable an open federation.

  • User A creates a Lync Online meeting.

  • User B receives the meeting request from user A, and then user B clicks the Join Lync Meeting hyperlink in Outlook.

In this scenario, user B is not able to join the meeting. Additionally, user B receives the following error message:

An error occurred…


To resolve this issue, install the following updates:

  • 2850074 Update 2850074 for Lync 2013: June 2014

  • 2881013 MS14-036: Description of the security update for Microsoft Lync 2013: June 10, 2014

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