DNS_STATUS_SINGLE_PART_NAME - 9559 (0x2557)
DNS name is a single-part name.
Updated: Feb 21, 2026
Introduction
This article provides a detailed explanation of the DNS_STATUS_SINGLE_PART_NAME error code, including its technical meaning and developer interpretation. The error is specific to the Domain Name System (DNS) context within Windows.
Technical Meaning
The DNS_STATUS_SINGLE_PART_NAME error code indicates that a single-part name was encountered in the DNS context. In DNS, names typically consist of multiple parts separated by dots (e.g., example.com). A single-part name is one that does not contain any dot separators and may be invalid or unexpected.
Error Details
- Error Name: DNS_STATUS_SINGLE_PART_NAME
- Numeric Code: 9559
- Hex Code: 0x2557
- Short Description: Indicates a single-part name in the DNS context.
Usage Context
This error is relevant when performing operations that involve DNS names, such as resolving hostnames or configuring domain-related settings. The presence of this error suggests that a part of the input or configuration did not conform to expected naming conventions.
Developer Interpretation
When encountering DNS_STATUS_SINGLE_PART_NAME, developers should interpret it as an indication that a single-part name was encountered in a context where multiple parts are expected. This could be due to incorrect user input, misconfiguration, or unexpected behavior within the application or system.
Related Errors
- Error Code 9560 (DNS_STATUS_NAME_NOT_RESOLVED): Indicates that a fully qualified domain name was not resolved successfully.
- Error Code 9561 (DNS_STATUS_NAME_DOES_NOT_EXIST): Indicates that the specified DNS name does not exist in the DNS system.
FAQ
Q: What causes DNS_STATUS_SINGLE_PART_NAME?
A: This error typically occurs when a single-part name is encountered where multiple parts are expected, such as during hostname resolution or domain configuration.
Q: How can I resolve this issue?
A: Ensure that all names used in DNS-related operations are fully qualified and contain the necessary dot separators. Validate input data to ensure it conforms to standard naming conventions.
Summary
The DNS_STATUS_SINGLE_PART_NAME error code is a specific indication of a single-part name encountered in the DNS context within Windows. Developers should interpret this error as an indication that a part of the input or configuration did not conform to expected naming conventions and take appropriate steps to correct it.