This section contains suggestions for possible reasons for failure. Follow the suggested steps and retry the login.
Perform one or more of the following steps to fix this error:
Verify that service.http.allowadminproxy is set to “yes”.
Verify that the admin-user has Calendar Server administrator privileges.
Verify that the admin-password is correct.
Verify that the calendar-user is a valid Calendar Server user.
Retry the log in.