At Ease Admin: Access Information No Longer Valid

Using Apple Network Administrator Toolkit (ANAT), and launching the At Ease Administration application, the following error message appears: "User's access information is no longer valid."
Below are four items to check which should resolve this issue:

Solutions

One of the four items below should resolve this issue:

• Make sure you are entering the proper name and password.
• Make sure the owner of the At Ease volume on the server has not changed.
• On the server, delete the At Ease Server preferences file. (The At Ease Server preferences file is in the Preferences folder which is in the System Folder.) Then restart the server. When you launch the At Ease Administration application, you will be prompted to enter the volume name and the name and password of the owner of the At Ease volume.
• If you have mounted any volume of the server on your desktop, unmount it first before trying to open the At Ease Administration Application. If you are using At Ease Administration Application, which is signed on to an active workgroup, you may need to quit from that workgroup.