The error occurs because of an issue in the SQL table that is being used by Endpoint Encryption.

To resolve the issue:

1. Stop the Endpoint Encryption Deployment Tool Service.

2. Using the SQLite Database Browser, open the following file:

   C:\Program Files (x86)\Trend Micro\OfficeScan\Addon\TMEE\db\tmdb.db

3. Execute the following query:

   DROP TABLE MAClientInfoUpdate;
   DROP TABLE DomainMapUpdate;

4. Go to Menu > File then Save the database.
5. Re-start the Endpoint Encryption Deployment Tool Service then sync again.