Multiple updates in hierarchy

I have an object that contains a script with an update function.

It is a child of another object that also has an update function.

The problem is the child update function only fires if I disable the script on the parent.

Scripts on different objects run independent from each other. Unless you have deactivated the parent object (in which case no script will be executed not on the parent nor a child) each script runs it’s Update on it’s own. So you either interpreted your results wrong, or you have explicitly implemented some sort of depenency between those two scripts.

Like @aditya said without the actual code this is going to be a guessing game we don’t want to participate in. ^^