Jon.Lee :
The messenger use the UserAdapter to get the information of current user .
Please check the global.asax code , for example , the code :
public string GetUserUniqueName()
{
if(Context.User.Identity.IsAuthenticated)
return Context.User.Identity.Name;
return null;
}
As you mention that , you find "null" user in the database ?
maybe you make wrong in this file . do not return string ["null"] , return [null] instead.
Regards , Terry .