ERROR_EVT_NON_VALIDATING_MSXML - 15013 (0x3AA5)

Registered MSXML doesn't support validation.

Updated: Feb 21, 2026

Technical Meaning

The error code ERROR_EVT_NON_VALIDATING_MSXML with the numeric value 15013 and hexadecimal representation 0x3AA5 indicates that a registered MSXML instance does not support validation. This error is specific to operations involving XML processing using Microsoft XML (MSXML) libraries in Windows environments.

Error Details

This error typically arises when an application attempts to perform validation on an XML document but encounters a registered MSXML component that lacks the necessary capabilities for such operations. The presence of this error suggests that the MSXML library being used does not include the required features or configurations to validate XML documents, which can be due to various reasons including incorrect installation or configuration.

Usage Context

This error is relevant in scenarios where an application relies on MSXML for processing and validating XML data. It may occur during operations such as parsing, transforming, or querying XML documents using MSXML APIs. Developers should ensure that the correct version of MSXML with validation support is installed and properly configured before attempting to perform validation tasks.

Developer Interpretation

When encountering this error, developers should interpret it as a capability issue rather than an operational failure. The application must either use a different MSXML library that supports validation or modify its logic to handle the absence of validation capabilities gracefully. This could involve checking for the presence of required features before attempting validation operations.

Related Errors

  • ERROR_EVT_INVALID_MSXML (15012): Indicates an invalid MSXML instance.
  • ERROR_EVT_UNSUPPORTED_MSXML_OPERATION (15014): Indicates that a requested operation is not supported by the MSXML library.

FAQ

Q: What does this error mean?

A: This error indicates that the registered MSXML component does not support validation, which can occur if an unsupported version or configuration of MSXML is in use.

Q: How can I resolve this issue?

A: Ensure that you are using a version of MSXML that supports validation. Check your application's dependencies and update them as necessary to include the required features.

Summary

The ERROR_EVT_NON_VALIDATING_MSXML error code signifies that an attempt to validate XML data has failed due to the absence of validation support in the registered MSXML library. Developers should ensure compatibility with the correct version of MSXML before attempting such operations.