Try with this:

Run the following command to define a trigger event that suits your environment. In this example, the command determines whether an IP address is given to a host, and then it starts or stops the service.

sc triggerinfo w32time start/networkon stop/networkoff

where w32Time is your service name

Try with this:

Run the following command to define a trigger event that suits your environment. In this example, the command determines whether an IP address is given to a host, and then it starts or stops the service.

sc triggerinfo w32time start/networkon stop/networkoff

where w32Time is your service name

or try this

https://support.microsoft.com/en-us/kb/922918