When starting up the SBS services, pay attention to the 'C:\Program Files\Altiris\Altiris Agent\Agents\Deployment\Task Handler\SBS\SBSStore' folder. When the '_Symantec_netBoot_Interface' service starts up, this folder should be created (if it didn't exist already). Starting up the '_Symantec_netBoot_NSiSignal' service will generate three files as listed below.
The first should be generated almost immediately upon startup of the NSiSignal service startup. The other two should generate approximately 30 seconds later (and the numeric value in the file name will vary).
If these three files are not generating, there is likely an issue with the SbsNSiSignal.ini file.
There are a few possibilities as to the cause of this issue:
Path="C:\Program Files\Altiris\Altiris Agent\Agents\Deployment\Task Handler\SBS\"
If the file includes different contents, copy/paste the text found here (modifying for your environment as necessary) into the file. If there is no 'SbsNSiSignal.ini' present, create it using notepad and name it accordingly, including the text here as the contents of the created file.
Deployment Solution 7.1