I am looking for a solution to this also. Anyone has any suggestions? The problem is on win7, for some reason users are able to launch web browsers before nac loads and begins posture assessment, and this causes nac to present the "guest use agreement" page to the user (instead of the homepage set configured in the browser).
The posture assessment itself takes a fraction of a second once started. however, I am seeing anywhere from 2 to 5 seconds after user sees desktop and before the nac agent pops up and displays "temp access" before immediately switching to the "full access"
I am not sure what kind of "delay" David mentioned is or how to configure it.