I've created a Group Policy to open up an inbound TCP port.
Every workstation on the Domain (about 15) has the inbound port open via Group Policy and it's greyed out so they can't change it, except one.
I have a Windows XP SP3 machine that doesn't have the rule, and if I manually create it, a reboot and the rule goes away.
I've run gpupdate on the machine with no success. This has been an ongoing issue for about 6 months now, I'm finally to a point where I'd like to fix it.
Any suggestions on where to look?