From version 3.1 Terra4D installer has the option to run the server as Windows service so it runs without User login.

The service is installed on a separate service user account 'Terra4D', so make sure there is no such user on the system before installation.

Important notes on terra3d-setup:

• because the service uses a different user account, any settings in terra3d-setup must be set in the 'system' Scope (select in upper right corner). Setting on Scopes Group/User will be ignored.
• make sure all filesystem paths in 'General' and 'Advanced' tabs are NOT in a user path 'e.g. c:\Users\Administrator' because the service cannot access these directories.

Configure as service without installation program:

• in terra3d-setup change on BOTH tabs 'Logging' and 'Server' the option 'Use service' to 'Use server service'
• check the notes on terra3d-setup above