winform app setup Can't connect to MDF on another machine

Question

hello all

i have created win from application with internal database (service based database ).i am using service based database so that after setup dont need to connect and install sql server on client machine .'

now my problem is when i create setup of application and install on my system its working fine .but when i install setup on other user machine and use form of application which connect with internal database than it showing error that network connection issue .

pleasse help me anyone .

thanks