Procedure

1. Ensure that the Lync Front-End server is functioning correctly.
2. Verify that the password of the account configured during installation has not expired. If the password has expired, perform the following:
   1. Open Windows Services Panel.
   2. Locate the following IM Security services:
      • Trend Micro IM Security Server
      • Trend Micro IM Security System Attendant
   3. Manually stop the services.
   4. Select each service individually, right-click and click Properties → Log on.
   5. Clear the log on password and type the updated password.
   6. Click OK.
   7. Manually restart the service.