DNS_ERROR_RCODE_YXDOMAIN - 9006 (0x232E)
DNS name that ought not exist, does exist.
Updated: Feb 21, 2026
Technical Background
The DNS_ERROR_RCODE_YXDOMAIN error code is a specific error that occurs in the Windows operating system when a DNS query returns an unexpected response. This error indicates that a domain name, which should not exist according to the DNS protocol, was found to be valid.
Error Details
- Error Name:
DNS_ERROR_RCODE_YXDOMAIN - Numeric Code: 9006 (0x232E)
- Short Description: Indicates a DNS name that ought not exist, does exist.
This error is related to the DNS protocol and its response codes. Specifically, it indicates an unexpected response code from a DNS server, where the response suggests that a domain name exists when it should not according to the expected behavior of the DNS protocol.
Common Causes
- Invalid Parameter Values: The query parameters sent to the DNS server might be incorrect or malformed, leading to an unexpected response.
- Incorrect Object Type: The operation being performed is expecting a certain type of object (e.g., a domain name) that does not exist according to the expected behavior.
- Exceeding Limits: There could be limitations in the system configuration or network setup that are causing this error.
Real-World Context
This error can occur when performing DNS queries, particularly when resolving domain names. It is important to understand the context of the query and ensure that all parameters are correctly configured before attempting to resolve a domain name.
Is This Error Critical?
The criticality of this error depends on the specific application or service using the DNS resolution. In general, it is not considered a critical system failure but can impact network connectivity and application functionality if not addressed.
How to Diagnose
- Review Operation Context: Ensure that the domain name being queried is correct and expected according to the intended use case.
- Validate Parameters: Check all parameters passed to the DNS query, including the domain name and any additional options or flags.
- Confirm Object Types: Verify that the object types involved in the operation are correctly identified and expected.
How to Resolve
- Correct Parameter Usage: Ensure that all parameters used in the DNS query are correct and valid.
- Adjust Operation Context: If the domain name is unexpected, consider whether there might be a misconfiguration or incorrect usage context.
- Restore Data: In some cases, restoring data or reconfiguring network settings may resolve the issue.
Developer Notes
When encountering this error, developers should focus on validating input parameters and ensuring that all operations are performed within the expected context. It is also important to review any recent changes in the system configuration or network setup that might have caused this error.
Related Errors
DNS_ERROR_RCODE_REFUSED(9013)DNS_ERROR_RCODE_FORMERR(9027)
These errors are related to unexpected responses from DNS servers and can provide additional context when troubleshooting network issues.
FAQ
Q: What does the DNS_ERROR_RCODE_YXDOMAIN error mean?
A: It indicates that a domain name, which should not exist according to the DNS protocol, was found to be valid. This is an unexpected response from a DNS server and can impact network connectivity and application functionality.
Q: How can I prevent this error?
A: Ensure that all parameters used in DNS queries are correct and validate input data before performing any operations. Regularly review system configurations and network settings for any changes that might cause issues.
Summary
The DNS_ERROR_RCODE_YXDOMAIN error is a specific issue related to unexpected responses from DNS servers. It can be caused by invalid parameters, incorrect object types, or exceeding limits in the system configuration. By understanding the context of the query and validating input data, developers can effectively diagnose and resolve this error.