This policy setting allows you to save multiple credentials for basic authentication. By default, Outlook will not save multiple sets of credentials for a single server when using Negov1.
If you enable this policy setting, these credentials are stored as GENERIC and retrievable by any process running with that user's rights on the machine. This is recommended when users may use multiple accounts on the same server using Negov1.
If you disable or do not configure this policy setting, Outlook will not save multiple sets of credentials for a single server when using Negov1.