The portal site that provides shared services cannot be contacted or does not exist.
Do the following:
In SharePoint Portal Server Central Administration, in the Component Configuration section, click Manage shared services for the server farm.
On the Manage Shared Services page, find the name of the portal site providing shared services.
In SharePoint Portal Server Central Administration, in the Portal Site and Virtual Server Configuration section, click List and manage portal sites.
On the Manage Portal Sites page, look for the name of the portal site providing shared services.
If the portal site was deleted, click Restore Portal Site and restore the portal site from the existing backup.
If no backup exists, create a new portal site on a separate server farm and configure it to provide shared services.
For more information on shared services and backing up and restoring portal sites, see the Microsoft Office SharePoint Portal Server 2003 Administrator’s Guide.