Removing Lync for Mac 2011

Office for Mac 2011 will reach end of support on October 10, 2017. To stay supported, you will need to upgrade. For more information, see these resources.


Applies to: Office for Mac 2011

Topic Last Modified: 2012-06-13

Follow these steps to remove Lync.

  1. Log in to your computer with administrative credentials.

  2. Quit Lync if it is running.

  3. Drag the Lync application to the Trash.

  4. To remove your existing Lync preferences, delete the following files:

    • /Users/username/Library/Preferences/

    • /Users/username/Library/Preferences/ByHost/MicrosoftLyncRegistrationDB.xxxx.plist

    • /Users/username/Library/Logs/Microsoft-Lync-x.log (this file is present only if you turned on Lync Logging)

    • /Users/username/Library/Logs/Microsoft-Lync.log

  5. Also, remove the following files and folders:

    • /Users/username/Documents/Microsoft User Data/Microsoft Lync Data/

    • /Users/username/Documents/Microsoft User Data/Microsoft Lync History/

    • /Library/Internet Plug-Ins/MeetingJoinPlugin.plugin


    If you remove the Microsoft Lync History folder, you will delete all conversations that are saved in the Conversation History.

  6. Open Keychain Access from the /Applications/Utilities folder.

    • Delete any keychains on the left that look similar to this: OC__KeyContainer__<e-mail>.

    • In your Login keychain, delete <your e-mail address> certificate.

  7. In /Users/username/Library/Keychains, delete all the files that look similar to this: OC__KeyContainer__<e-mail>.