Greetings, I have a user who is experiencing problems logging onto an Exchange 5.5 server, Background: User VPN's into Windows 2000 Server Exchange 5.5 is on member NT 4 Server Domain Controller The user is able to successfully log on by VPN to the Windows 2000 server however when he tries to connect the Exchange server, he is continuously prompted for his username and password... The user is able to successfully connect to the Exchange Server from his home computer which is running XP Pro via VPN (Broadband Connection) The problem happens when he tries to log on with his laptop while he is on the road. Laptop is running XP Pro. No SP1 His laptop uses Verizon Express Networks Thanks in advance. Justin Maas