Hi CBZ1904,
There is an option to use the AexConfig.exe \reconfigure. Please open the cmd.exe with Administrative Rights:
1) Using the cmd.exe go to E:\Program Files\Altiris\Notification Server\Bin
2) Execute the following command line:
AeXConfig.exe /configure "e:\Program Files\Altiris\Notification Server\Config\CoreAgentSettings.config"
If your Notification Server is installed in another drive, please change letter E: for the proper drive letter.
Regards,
Fábio Sanches