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Article ID: 2468019 - Last Review: July 18, 2013 - Revision: 2.1

Symptoms

  • Lync clients cannot sign into the Lync Server pool and return the following information in an error dialog:

    Cannot sign in because server is temporarily unavailable. if the problem continues, please contact your support team.

  • The Lync Server Front End service will not start and logs following error in the Lync Server event log:


    Log Name:      Lync Server
    Source:        LS Server
    Event ID:      12290
    Task Category: (1000)
    Level:         Error
    Keywords:      Classic
    Description: The evaluation period has expired.

    The evaluation period for Microsoft Lync Server has expired. Please upgrade from the evaluation version to the fully licensed version of the product. Look at help for Setup.exe to learn how to upgrade from evaluation version to the licensed version.
    Cause: The evaluation period for Microsoft Lync Server has expired.
    Resolution: Please upgrade from the evaluation version to the licensed version of the product. Look at help for Setup.exe to learn how to upgrade from evaluation version to the licensed version.

Cause

The evaluation version of Lync Server has reached its expiration date. 

Resolution

Use the step by step information that is listed in the following Microsoft TechNet article:

Updating From the Evaluation Version of Microsoft Lync Server 2010 (http://technet.microsoft.com/en-us/library/gg521005.aspx)

Updating From the Evaluation Version of Microsoft Lync Server 2013 (http://technet.microsoft.com/en-us/library/gg521005.aspx)
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use (http://go.microsoft.com/fwlink/?LinkId=151500) for other considerations.

Applies to
  • Microsoft Lync Server 2010 Enterprise Edition
  • Microsoft Lync Server 2010 Standard Edition
  • Microsoft Lync Server 2013
Keywords: 
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