Skype for Business 2015 (Lync 2013) crashes in the lync.exe process on startup Content provided by Microsoft Applies to: Skype for Business 2015Microsoft Lync 2013 Select Product Version All Products Symptoms This issue occurs because a .hist file that’s located under the C:\Users\ %UserProfile%\AppData\Local\Microsoft\Office\15.0\Lync\%firstname.lastname@example.org%\HistorySpooler folder is corrupted. Resolution To fix this issue, install the April 4, 2017, update (KB3178731) for Microsoft Skype for Business 2015 (Lync 2013).Note Lync 2013 was upgraded to Skype for Business in April 2015. Last Updated: 4 Apr 2017 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.