Access denied to stop SOPHOS Service?

Hello,

I am running this bat file:

net stop "Sophos Agent"
net stop "Sophos Anti-Virus"
net stop "Sophos Anti-Virus status reporter"
net stop "Sophos AutoUpdate Service"
net stop "Sophos Message Router"
net stop "Sophos System Protection Service"
net stop "Sophos Web Control Service"
net stop "Sophos Web Filter"
net stop "Sophos Web Intelligence Service"
net stop "Sophos Endpoint Defense Service"

C:\Windows\system32>NET STOP "SOPHOS ENDPOINT DEFENSE SERVICE"
System error 5 has occurred.

Access is denied.

The last service "Sophos Endpoint Defense Service" does not stop...

I tried to place the service in another position in the batch, it is the same issue.

I did run it by itself and it is the same issue.

What could be the cause of this access denied for only this service? Some specifics security?

Thanks,

Dom