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This update is no longer available. To fix the issues that are described in this article, install the latest Microsoft Office update from the following Microsoft Learn article:

Latest updates for versions of Office that use Windows Installer (MSI)


This article describes update 2850074 for Microsoft Lync 2013 that was released on June 2014. This update version is 15.0.4623.1000.

Note To determine the version of Lync 2013, follow these steps:

  1. In Lync 2013, click the Options button.

  2. On the Help menu, click About Microsoft Lync.

Issue that the update fixes

This update resolves the following issue:

2962975 Lync 2013 starts and prompts you for credentials when you join meeting without account that is provisioned for Lync 2013
Additionally, this update also resolves the following issues:

Note To resolve the following issues, after you install update 2850074, you must install the security update 2881013:

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

  • Lync 2013 crashes in a large meeting that many users have joined. Additionally, you may receive the following error message:

    Problem signature
    Problem Event Name: APPCRASH
    Application Name: lync.exe
    Application Version: Version number
    Application Timestamp: Value
    Fault Module Name: UccApi.dll
    Fault Module Version: Version number
    Fault Module Timestamp: Value
    Exception Code: c0000005
    Exception Offset: 001195a7
    OS Version: Version number
    Locale ID: 1033

    BUG #: 3429247 (Office15)

  • Lync 2013 crashes in a meeting. This issue occurs when a meeting item is changing in the meeting list view model.

    BUG #: 3429789 (Office15)

  • 2968251 Update adds an upload notification when you upload PPT in a meeting in Lync 2013

  • 2968248 Lync 2013 video quality is low when you scale up the size of the video window in UI suppression mode

  • 2968239 "An error occurred" error when a Lync 2013 user joins a Lync Online meeting that is created by a non-federated user

  • 2962986 Lync 2013 takes a long time to sign in after it is disconnected from a front-end server

  • 2962982 Caller's display name is not in the toast notification when you receive a call in Lync 2013

  • 2962980 Lync 2013 prompts you for Exchange credential in an Exchange deployed environment

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