WSANO_DATA - 11004 (0x2AFC)

The requested name is valid, but no data of the requested type was found.

Updated: Feb 21, 2026

Technical Meaning

The WSANO_DATA error, with the numeric code 11004 and hexadecimal representation 0x2AFC, indicates that a network-related operation was performed on a valid name but did not return the expected data type. This typically occurs in scenarios where a specific resource or attribute is requested from a domain name, but no such information exists.

Error Details

This error is commonly encountered in network programming and DNS resolution processes. It suggests that while the queried name is recognized by the system, it does not contain the required data type for the operation being performed. For instance, if an application attempts to retrieve a specific resource record (such as an A or AAAA record) from a domain name but finds no such records, this error will be returned.

Usage Context

The WSANO_DATA error can occur in various network-related operations, including:

  • DNS resolution
  • Network configuration queries
  • Resource record retrieval

Developers should ensure that their applications handle this error gracefully and provide appropriate feedback or fallback mechanisms when encountering it.

Developer Interpretation

When an application receives the WSANO_DATA error, it signifies that a network operation was performed on a valid domain name but did not yield the expected data type. This can be due to several reasons such as incorrect resource record types requested, missing records in DNS, or misconfigured network settings.

Developers should check the specific context of the operation and ensure that they are requesting the correct data type for the queried name. Additionally, validating input parameters and ensuring proper configuration can help prevent this error from occurring.

Related Errors

  • WSAENOTFOUND (10051) - The network name cannot be found.
  • WSAECONNREFUSED (10061) - Connection attempt refused by the target machine.
  • WSAEHOSTUNREACH (10065) - No connection could be made because the target machine actively refused it.

FAQ

Q: What does WSANO_DATA mean?

A: The WSANO_DATA error indicates that a network operation was performed on a valid name but did not return the expected data type. This typically occurs when requested resource records are missing or incorrect.

Q: How can I handle this error in my application?

A: Ensure that your application checks for and handles the WSANO_DATA error gracefully, providing appropriate feedback to users and implementing fallback mechanisms where necessary.

Summary

The WSANO_DATA error (11004) is a network-related error indicating that a valid name was queried but no data of the requested type was found. Developers should ensure proper validation of input parameters and handle this error appropriately in their applications to maintain robust network operations.