We have a production environment running dynamics 4 r21. Recently, the CRM admins tried to add a user and received the error: 'The current user id could not be determined'. This lead to the admins noticing that the user exists in the org db but not in the MSCRM_Config db.
When a CRM admin attempts to add the user, they receive 'domain name already exists'.
Has anyone seen this before? Or does anyone have an idea how to resolve such an issue?