The name of the product you posted is not specific.
These are *specific* names of CA products: CA Personal Firewall, CA
Internet Security Suite, etc.
The executables involved for Vista are wuauclt.exe and wuapp.exe.
RPC can *not* be blocked by the firewall, as shown here:
Some firewalls may reject network traffic that originates from Windows
Server 2003 Service Pack 1-based or Windows Vista-based computers
Suggest *not* doing any editing of the registry rather, visit CA's site
to learn how to allow RPC access.
MowGreen [MVP 2003-2009]
> I have CA Security Software firewall and the instruction for correcting this
> update error says to add Windows update websites to a firewall exceptions
> list. The problem is that in CA Security Firewall, it asks me to add to the
> advanced application control list. I don't know what the name of the program
> is. The website address looks nothing like the options coming up under the
> application control list and when I select add, it asks me to select the file
> to be added.