2016 Keystone Tax Solutions Pro Program Instructions 2016 Keystone Tax Solutions Pro Desktop Initial Configuration of the Program Logging Into the Program – Usernames and Passwords Setting up and Working With Security Roles Updated on September 8, 2020 Was this article helpful? Yes No Related Articles MSXML Errors Tax Program Service Has Stopped Error Messages: ENCRYPT/ DECRYPT Error Message Options Copying Keystone Tax Solutions Pro Desktop Configuration To A New Computer Program Backup Utility