Outlook 2010 freezes, and then crashes when it runs together with Lync 2013 Content provided by Microsoft Applies to: Microsoft Lync 2013 Select Product Version All Products This issue occurs because, when ucaddin.dll tries to repair meetings, it encounters a problem. Resolution To resolve this issue, install the March 10, 2015 update for Lync 2013. Last Updated: Mar 10, 2015 Did this solve your problem? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.