We are using GPO to push out proxy settings and it is applying and working for most users. There is a small group of users, admittedly in a separate OU, that it's just not working for. I can do a gpresult /R and see that the GPO is being applied. However, when I check the proxy settings it's not using the correct proxy.
This GPO is at the root of the domain. How can I further test this?