Right now you’d have to configure XP a bit to connect since Escargot’s login servers don’t effectively support XP’s ciphers (this is due to the production server we use, which by design doesn’t support anything older than “modern” subsets of TLS 1.0; and even when you finish you’ll have to struggle with logging in for a bit):
I’m hoping in the future the creator gets around to finding a way to properly support older HTTPS protocols to make MSN work more natively on older OSes like XP.