Assume that you set up two Internet Small Computer Systems Interface (iSCSI) connections to an iSCSI target. One connection uses Challenge Handshake Authentication Protocol (CHAP) or Reverse CHAP for authentication, and the other connection does not configure authentication. In this scenario, Windows cannot detect the iSCSI target.
This issue occurs because iSCSI failover does not support multiple authentication.
To fix this issue, set the authentication settings to be the same on both iSCSI connections or initiators.