changing a defined application

Hi, I was wondering if anyone could tell me a way to change a program that i defined as a trusted application to a windows system applcation? i’m having trouble trying to figure out how to do so.

Go to Computer Security Policy > Defense+ rules. Choose the application whose rule you want to change. Right click on it > edit > Predifined policies > choose Windows System Application > apply > ok.

thanks! That Solved it!