Knowledge

ERROR_IPSEC_IKE_INNER_IP_ASSIGNMENT_FAILURE - 13899 (0x364B)

Error in assigning inner IP address to initiator in tunnel mode.

Updated: Feb 21, 2026

Technical Meaning

This error code indicates a failure in the process of assigning an inner IP address to the initiator during tunnel mode operation within the Internet Protocol Security (IPsec) framework. The IKE (Internet Key Exchange) protocol is responsible for establishing and maintaining secure connections, and this specific error pertains to the assignment of internal network addresses.

Error Details

The error ERROR_IPSEC_IKE_INNER_IP_ASSIGNMENT_FAILURE (13899 or 0x364B) occurs when the IPsec system fails to correctly assign an inner IP address to a tunnel initiator. This can happen due to various reasons, such as unsupported operations or incorrect configuration.

Common Causes

  • Unsupported Operations: The operation attempted by the system is not supported in the current context or configuration.
  • Incorrect Configuration: Misconfiguration of the IPsec policy or tunnel settings may lead to this error.
  • Resource Limitations: Exceeding certain resource limits, such as the number of concurrent tunnels, can cause this issue.

Real-World Context

In a typical network environment, when establishing an IPsec tunnel in tunnel mode, the system must assign an inner IP address to the initiator. This address is used for internal communication within the secure tunnel. If the assignment fails, it can disrupt the establishment of the secure connection and prevent data from being transmitted securely.

Is This Error Critical?

The criticality of this error depends on the specific context in which it occurs. In a network environment where IPsec tunnels are essential for security, this error could be critical as it may prevent secure communication between parties.

How to Diagnose

To diagnose the issue, follow these steps:

  1. Review Operation Context: Ensure that the operation is being performed in an appropriate context and that all necessary components are correctly configured.
  2. Validate Parameters: Check that all parameters used in the IPsec configuration are valid and correct.
  3. Confirm Object Types: Verify that the objects involved, such as policies and tunnels, are of the expected types.
  4. Verify Input Data: Ensure that any input data required for the operation is correctly formatted and not corrupted.
  5. Check Limits or Constraints: Confirm that no resource limits have been exceeded, such as the maximum number of concurrent tunnels.

How to Resolve

To resolve this issue, consider the following steps:

  1. Correct Parameter Usage: Ensure that all parameters are used correctly according to the IPsec policy and configuration guidelines.
  2. Adjust Operation Context: If the operation context is incorrect, adjust it to match the requirements for establishing a secure tunnel.
  3. Restore Data: If data corruption is suspected, restore or reconfigure any affected components.
  4. Retry Operation with Valid Inputs: Attempt to establish the IPsec tunnel again using valid inputs and configurations.

Developer Notes

Developers should ensure that their applications are compatible with the IPsec framework and that all necessary configurations are correctly set up before attempting to establish secure tunnels. Additionally, thorough testing of the application in various scenarios can help identify and resolve issues related to inner IP address assignment.

Related Errors

  • ERROR_IPSEC_IKE_INNER_ADDRESS_NOT_FOUND (13897)
  • ERROR_IPSEC_IKE_OUTER_ADDRESS_MISMATCH (13895)
  • ERROR_IPSEC_IKE_SECURITY_ASSOCIATION_FAILURE (13894)

FAQ

Q: What does the error code 13899 mean?

A: The error code 13899, or ERROR_IPSEC_IKE_INNER_IP_ASSIGNMENT_FAILURE, indicates a failure in assigning an inner IP address to the initiator during tunnel mode operation within the IPsec framework.

Q: How can I prevent this error from occurring?

A: To prevent this error, ensure that all configurations are correct and that the operation context is appropriate. Regularly validate parameters and input data to avoid issues related to incorrect usage or corruption.

Q: Is this error critical for network security?

A: Yes, in environments where secure communication via IPsec tunnels is essential, this error can be critical as it may disrupt secure connections.

Summary

The ERROR_IPSEC_IKE_INNER_IP_ASSIGNMENT_FAILURE (13899) error indicates a failure in assigning an inner IP address to the initiator during tunnel mode operation within the IPsec framework. This error is specific and relates to capability issues, such as unsupported operations or incorrect configuration. Diagnosing and resolving this issue involves reviewing the operation context, validating parameters, confirming object types, verifying input data, and checking resource limits. Developers should ensure compatibility with the IPsec framework and thoroughly test their applications to avoid such errors.