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ERROR_IPSEC_IKE_NO_PRIVATE_KEY
ERROR_IPSEC_IKE_NO_PRIVATE_KEY means Windows found a certificate but cannot use it to authenticate because its private key is missing or inaccessible. A certificate imported without its private key will produce this type of failure.
A certificate list alone is insufficient evidence. Verify that the selected certificate has a usable private-key association in the machine context and that the key provider permits the IKE service to use it.
What to check
- Check that the certificate shows an associated private key in the Local Computer store.
- Verify private-key permissions for the system context and any hardware-key provider used by the certificate.
- Reenroll or reimport the complete certificate and private key from the approved source if the association is missing.
Microsoft: IKE/AuthIP authentication methods
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