ERROR_IPSEC_IKE_NO_PUBLIC_KEY - 13828 (0x3604)

Peer's certificate did not have a public key.

Updated: Feb 21, 2026

Technical Background

The ERROR_IPSEC_IKE_NO_PUBLIC_KEY error code, with the numeric value 13828 (0x3604), indicates that during an IPsec IKE negotiation process, the peer's certificate did not contain a public key. This is a critical security requirement for establishing secure communication channels.

Error Details

This error typically occurs when the IPsec stack attempts to establish a Security Association (SA) with another endpoint but fails because the peer’s digital certificate does not include a public key necessary for the cryptographic operations required by the IKE protocol.

Common Causes

  • Invalid Certificate: The peer's certificate may be malformed or missing the required public key information.
  • Incorrect Configuration: Misconfiguration of the IPsec policy or settings on either endpoint could lead to this error.
  • Unsupported Operations: The operation being attempted might not support certificates without a public key, which is generally uncommon but possible in certain configurations.

Real-World Context

In an IPsec environment, mutual authentication and key exchange are crucial. The IKE protocol relies on the presence of a public key to establish trust between peers. If this key is missing, the negotiation process cannot proceed as expected, leading to this error.

Is This Error Critical?

Yes, this error indicates a fundamental security issue that must be addressed before secure communication can be established.

How to Diagnose

  1. Review Operation Context: Ensure that both endpoints are configured correctly and have valid certificates installed.
  2. Validate Parameters: Check the IPsec policy settings on both sides for any misconfigurations.
  3. Confirm Object Types: Verify that the certificate being used is a public key certificate, as other types might not be supported by the IKE protocol.
  4. Verify Input Data: Ensure that all certificates are properly formatted and contain the necessary public key information.
  5. Check Limits or Constraints: Confirm that there are no system limits or capacity issues preventing the use of the certificate.

How to Resolve

  1. Correct Parameter Usage: Ensure that the correct parameters are used in the IPsec configuration, particularly those related to certificate validation and public key presence.
  2. Adjust Operation Context: If necessary, adjust the operation context to ensure it aligns with the requirements of the IKE protocol.
  3. Restore Data: Reinstall or replace any certificates that may be corrupted or missing the required public key information.
  4. Retry Operation with Valid Inputs: Once the configuration and data are correct, retry the operation.

Developer Notes

Developers should ensure that all IPsec-related configurations adhere to best practices for certificate management and security protocols. Regularly updating certificates and verifying their integrity can help prevent such errors from occurring.

Related Errors

FAQ

Q: What does the ERROR_IPSEC_IKE_NO_PUBLIC_KEY error mean?

A: This error indicates that a peer's certificate used in an IPsec IKE negotiation did not contain a public key, which is necessary for establishing secure communication.

Q: How can I resolve this issue?

A: Verify the certificates on both endpoints and ensure they are correctly configured to include public keys. Adjust any misconfigurations and retry the operation.

Summary

The ERROR_IPSEC_IKE_NO_PUBLIC_KEY error is a critical security issue that must be addressed before secure communication can be established in an IPsec environment. Proper certificate management and configuration are essential to avoid this error.