1. Download "Inventory Agent" msi package from your Notification Server machine which is stored in
- \\<Your NS Address>\NSCap\bin\Win64\X64\Inventory\Agent Package\
or (depending whether client OS is x86 or x64)
- \\<Your NS Address>\NSCap\bin\Win32\X86\Inventory\Agent Package\
and run as "Administrator" from cmd again this command line
msiexec.exe /x "Symantec_InventoryAgent_x64.msi" /qn REBOOT=ReallySuppress ALLUSERS=1
2. Or other "way", find "MyUninstall" tool and try to uninstall Inventory Agent on client PC.