I have had some problems setting up a new wireless router - "Cannot find certificate" when I try to use WPA personal.
In fact the problem has been solved by installing the latest WiFi card drivers.
But I would still be grateful for answers to the following questions:
1 - Are these certificates stored in files or the registry?
2 - Are they already resident in a new installation of XP or are they installed later in some way?
3 - Are they related in any way to the windows update download called "Root certificates"?