Security prompts for Lync for Mac 2011 and Office for Mac after you upgrade to macOS 10.12 Sierra


After you upgrade to macOS 10.12 Sierra, the first time you start an Office app for Mac you see the following security prompts for Microsoft AutoUpdate.
Security prompt
Security prompt


This issue occurs because new operating system security features require user-approval for Microsoft AutoUpdate to automatically check for updates. The Microsoft AU Daemon program is the background process that checks for updates when an Office app is opened. The Microsoft AutoUpdate program is the UI that is displayed when updates are found.


To work around this issue, select Open on each of the security prompts that will confirm user approval of Microsoft AutoUpdate. After it is approved, the operating system will no longer display the prompts.

More Information

The following applications and versions are compatible with macOS 10.12 Sierra:

Article ID: 3195127 - Last Review: Sep 27, 2016 - Revision: 1