Skype for Business 2016 freezes on a computer that has Malware bytes is installed


On a computer that has Malware bytes Anti-Malware client software installed, Microsoft Skype for Business 2016 freezes when you try to start an A/V scenario, such as making an audio or video call or joining the Audio or Video portion of a meeting, file transfer, or Application or Desktop Sharing. Additionally, the following event is logged in the Application log:


To fix this problem, install the latest update for Skype for Business 2016.

Skype for Business 2016 Click-to-Run clients

Current Branch for Business: 16.0.6741.2048 and later builds

First Release Current Branch for Business, First Release Monthly Channel, Monthly Channel: 16.0.6965.2058 and later builds

For more information about C2R Channel builds, see Microsoft 365 client update channel releases.


To recover the computer from this condition, try the following methods in the given order:

  • Exit Malware bytes client. This may let Lync.exe (Skype for Business 2016) exit completely.
  • Restart the computer.

After the computer is recovered, add Lync.exe to the Web Exclusions list in Malware bytes, as shown in the following screenshot.

Screenshot that shows Lync app added to the Web Exclusions list in the Malware bytes settings page

More Information

To determine whether your Office installation is Click-to-Run or MSI-based, follow these steps:

  1. Start an Office 2016 application.
  2. On the File menu, select Account.
  3. For Office 2016 Click-to-Run installations, an Update Options item is displayed. For MSI-based installations, the Update Options item isn't displayed.
Office 2016 Click-to-Run installation MSI-based Office 2016
Screenshot that shows the Word clicks to run option. Screenshot that shows the Word MSI.


Microsoft is researching this problem and will post more information in this article when the information becomes available.

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