Endpoint Security Suite Pro Advanced Installation Guide v1.8

Services Panel - Add Domain Account User

On the Security Management Server, navigate to the Services panel (Start > Run... > services.msc > OK).
Right-click Key Server and select Properties.
Select the Log On tab and select the This account: option.
In the This account: field, add the domain account user. This domain user must have at least local administrator rights to the Key Server folder (must be able to write to the Key Server config file, as well as the ability to write to the log.txt file).
Enter and confirm the password for the domain user.
Click OK.
.
Restart the Key Server Service (leave the Services panel open for further operation).
Navigate to <Key Server install dir> log.txt to verify that the Service started properly.