DNS_ERROR_UNKNOWN_SIGNING_PARAMETER_VERSION - 9111 (0x2397)

The DNS server encountered a signing key with an unknown version. Zone signing will not be operational until this error is resolved.

Updated: Feb 21, 2026

Technical Background

The DNS_ERROR_UNKNOWN_SIGNING_PARAMETER_VERSION error indicates that a DNS server encountered a signing key with an unknown version during the process of zone signing. This error is specific to the DNS service and its handling of cryptographic keys used for secure zone signing.

Error Details

  • Error Name: DNS_ERROR_UNKNOWN_SIGNING_PARAMETER_VERSION
  • Numeric Code: 9111 (0x2397)
  • Short Description: The DNS server encountered a signing key with an unknown version. Zone signing will not be operational until this error is resolved.

Common Causes

The error typically occurs due to the following reasons:

  • Invalid Parameter Values: The version of the signing key provided does not match any known or supported versions.
  • Incorrect Object Type: The object being signed may not be a valid zone for which signing keys are applicable.
  • Unsupported Operations: The operation attempted is not supported by the current configuration or capabilities of the DNS server.

Real-World Context

This error can occur in scenarios where a DNS administrator attempts to sign a zone using a key with an unsupported version. For example, if a new version of a signing key is introduced and the DNS server has not been updated to recognize it, this error will be triggered.

Is This Error Critical?

The criticality of this error depends on the specific context in which it occurs. If zone signing is essential for security or compliance reasons, then resolving this error should be prioritized. However, if the DNS server is primarily used for non-critical services, the impact may be less severe.

How to Diagnose

To diagnose and resolve the DNS_ERROR_UNKNOWN_SIGNING_PARAMETER_VERSION error, follow these steps:

  1. Review Operation Context: Ensure that the zone being signed is correctly identified and that the signing operation aligns with the server's configuration.
  2. Validate Parameters: Verify that the version of the signing key matches a known or supported version in the DNS server's configuration.
  3. Confirm Object Types: Confirm that the object being signed is a valid zone for which signing keys are applicable.
  4. Verify Input Data: Check the integrity and validity of the input data, including the signing key file.
  5. Check Limits or Constraints: Ensure that there are no resource limits or constraints preventing the operation from proceeding successfully.

How to Resolve

To resolve the DNS_ERROR_UNKNOWN_SIGNING_PARAMETER_VERSION error, take the following actions:

  • Correct Parameter Usage: Use a valid and supported version of the signing key. Consult the documentation for the DNS server software to identify compatible versions.
  • Adjust Operation Context: Ensure that the operation context is correct and aligns with the capabilities of the DNS server.
  • Restore Data: If data corruption or incorrect configuration is suspected, restore from a known good backup if available.
  • Retry Operation with Valid Inputs: Attempt the signing operation again using valid inputs. If issues persist, consult the documentation for further guidance.

Developer Notes

Developers should ensure that their DNS server configurations are up to date and compatible with the versions of keys being used. Regularly updating the DNS server software and key management practices can help prevent such errors from occurring.

Related Errors

  • DNS_ERROR_KEY_NOT_FOUND: Indicates that a required signing key could not be located.
  • DNS_ERROR_INVALID_SIGNATURE: Occurs when a signature is invalid or cannot be verified.
  • DNS_ERROR_ZONE_LOCKED: The zone being signed is locked and cannot be modified.

FAQ

Q: What does the DNS_ERROR_UNKNOWN_SIGNING_PARAMETER_VERSION error mean?

A: This error indicates that a signing key with an unknown version was encountered during the process of zone signing. It suggests that the DNS server has not been configured to recognize or support this version of the key.

Q: How can I prevent this error from occurring?

A: Ensure that your DNS server is up to date and that all keys used for signing are compatible with the server's configuration. Regularly update the software and verify the integrity of the keys being used.

Summary

The DNS_ERROR_UNKNOWN_SIGNING_PARAMETER_VERSION error is a specific issue related to zone signing in the DNS service. It occurs when an unsupported version of a signing key is encountered. By understanding the causes, diagnosing the problem, and taking appropriate actions, this error can be resolved effectively.