Knowledge

DNS_ERROR_KSP_NOT_ACCESSIBLE - 9112 (0x2398)

The specified key service provider cannot be opened by the DNS server.

Updated: Feb 21, 2026

Technical Background

The DNS_ERROR_KSP_NOT_ACCESSIBLE error code indicates that the DNS server is unable to access a specified key service provider. This error typically arises in scenarios where the DNS server attempts to utilize a cryptographic service provider (KSP) for operations such as secure DNS queries or certificate management.

Error Details

The DNS_ERROR_KSP_NOT_ACCESSIBLE error code, 9112 (0x2398), is returned when the DNS server encounters an issue with accessing a key service provider. This can occur during various cryptographic operations that require interaction with KSPs, such as secure DNS transactions or certificate validation.

Common Causes

  • Unsupported Operations: The operation being performed by the DNS server requires a specific KSP that is not available or supported on the system.
  • Incorrect Security Context: The security context under which the DNS server is operating does not have sufficient privileges to access the required KSP.
  • KSP Configuration Issues: Misconfiguration of the KSP settings can prevent the DNS server from accessing it properly.

Real-World Context

In a network environment, this error might manifest when a DNS server attempts to perform operations that require cryptographic services. For example, if the DNS server is configured to use secure DNS (DoH or DoT) and cannot access the necessary KSP, this error will be returned.

Is This Error Critical?

The criticality of this error depends on the specific operation being performed by the DNS server. If the operation involves cryptographic services, such as secure DNS transactions, then this error can significantly impact network security and functionality.

How to Diagnose

To diagnose DNS_ERROR_KSP_NOT_ACCESSIBLE, follow these steps:

  1. Review Operation Context: Ensure that the DNS server is configured correctly for the operations it needs to perform.
  2. Validate Parameters: Check if any parameters passed to cryptographic functions are valid and properly formatted.
  3. Confirm Object Types: Verify that the object types being used (e.g., KSP) match the expected types required by the operation.
  4. Verify Input Data: Ensure that all input data is correctly formatted and does not contain errors that could prevent access to the KSP.
  5. Check Limits or Constraints: Confirm that there are no system limits or constraints that might be preventing access to the KSP.

How to Resolve

To resolve DNS_ERROR_KSP_NOT_ACCESSIBLE, consider these practical steps:

  1. Correct Parameter Usage: Ensure that all parameters passed to cryptographic functions are correct and valid.
  2. Adjust Operation Context: Modify the security context under which the DNS server is operating if necessary, ensuring it has sufficient privileges to access the required KSP.
  3. Restore Data: If data corruption or misconfiguration is suspected, restore the affected components to a known good state.
  4. Retry Operation with Valid Inputs: Attempt to perform the operation again using valid inputs and ensure that all prerequisites are met.

Developer Notes

When developing applications that interact with DNS servers, it is crucial to handle DNS_ERROR_KSP_NOT_ACCESSIBLE errors gracefully. Ensure that your application can detect this error and provide appropriate feedback or fallback mechanisms when cryptographic operations fail due to KSP unavailability.

Related Errors

  • DNS_ERROR_NO_SECURITY_PROTOCOL: Indicates the absence of a security protocol required for secure DNS transactions.
  • DNS_ERROR_KRB5_NOT_ACCESSIBLE: Occurs when Kerberos 5 services are not accessible, impacting secure authentication and authorization processes.

FAQ

Q: What does DNS_ERROR_KSP_NOT_ACCESSIBLE mean?

A: This error indicates that the DNS server cannot access a required key service provider for cryptographic operations.

Q: How can I prevent this error from occurring?

A: Ensure proper configuration of KSPs and security contexts, and validate all parameters passed to cryptographic functions.

Q: Can this error impact network security?

A: Yes, if the operation involves secure DNS transactions or certificate management, this error can compromise network security.

Summary

DNS_ERROR_KSP_NOT_ACCESSIBLE is a specific error code indicating that the DNS server cannot access a required key service provider. This error typically arises in scenarios involving cryptographic operations and can impact network security and functionality. By understanding its causes and implementing appropriate diagnostic and resolution steps, you can mitigate this issue effectively.