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VDS_E_ISCSI_GROUP_PRESHARE_KEY
This HRESULT reports failure of a specific VDS iSCSI security-management step: setting the group pre-shared key. The published VDS error table does not identify the cryptographic or policy reason underneath the failure. It should therefore be logged as a legacy initiator/security configuration failure until a more specific service or provider status is available.
Why this state matters
It is also separate from CHAP. CHAP uses a challenge/response exchange based on a shared secret and VDS has explicit structures and methods for initiator and target CHAP secrets. A group pre-shared-key failure belongs to the IPsec/IKE-related configuration path and changing CHAP credentials is not a direct fix.
Diagnostic focus
- Capture the security operation and initiator/portal scope without recording the key bytes.
- Inspect iSCSI Initiator and security-related events for a lower-level status that explains validation or policy rejection.
- Confirm the application is not confusing VDS CHAP shared-secret APIs with legacy pre-shared-key configuration.
- Check Windows/provider support for the security API being used before treating the error as transient.
Technical references
MS-VDS error codes · IVdsServiceIscsi · VDS_ISCSI_SHARED_SECRET · RFC 1994: CHAP · IVdsIscsiPortal::GetIpsecSecurity
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