Notes Single Logon Access is denied

Hi

We have just instaaled a Notes 8.5 client on Citrix.

We have configured Single single logon and it works, but only for some users.

The people where the feature do not work get this msgbox:

Your Windows password could not be retrieved by Notes Single Logon: Access is denied. After they select OK they get a normal logon prompt.

The windows and notes password is the same and all the users on the server have the same profile type.

Hope someone can help.

Subject: I don’t think it works…

http://www.ibm.com/support/docview.wss?rs=899&uid=swg21105322