I'm getting double logon when connecting to any RemoteApp via RD Web Access from a non domain joined WinXp Sp3 machine on first attempt. I can access RD Web with my domain user account wtih no problem, but when I click on the application, it brings up another logon screen asking me to enter my credentials again before connecting to the RemoteApp and at the same time the publisher warning came up and saying that it's using my local machine credential to connect rather than the domain account i use to connect to the RD Web. If i logged off and re-logon again, the logon dissappear. So it only happens on first attempt. Does SSO only works if the machine is join to the domain? When CredSSP is enabled, the double logon problem happens to domain admins and domain users. When we DISABLED CredSSP, the problem only happens to domain users but not admins. I tried putting the domain users in the admin group and the double logon disappear. Is there any permission I can tweak between the admins and users to get the SSO works for non domain joined machine??1 person needs an answerI do too