EPT_S_NOT_REGISTERED - 1753 (0x6D9)

There are no more endpoints available from the endpoint mapper.

Updated: Feb 21, 2026

Introduction

The EPT_S_NOT_REGISTERED error code, with the numeric value 1753 (0x6D9), indicates that there are no more endpoints available from the endpoint mapper. This error is commonly encountered in scenarios where a system or application attempts to allocate an endpoint but finds none available.

Technical Meaning

The EPT_S_NOT_REGISTERED error code is returned by the Windows operating system when it encounters a situation where all available endpoints have been allocated, and no additional ones can be assigned. This typically occurs in network-related operations or scenarios involving resource allocation within the endpoint mapper framework.

Error Details

  • Error Name: EPT_S_NOT_REGISTERED
  • Numeric Code: 1753 (0x6D9)
  • Short Description: There are no more endpoints available from the endpoint mapper.

Usage Context

This error code is relevant in contexts where applications or system components rely on the availability of endpoints for network operations, device communication, or resource allocation. It can be encountered in various subsystems that interact with the endpoint mapper framework, such as networking services, device drivers, and other kernel-mode components.

Developer Interpretation

Developers should interpret this error code to indicate that the system has reached its limit of available endpoints. This could mean that too many resources are being requested or that there is a limitation in the number of endpoints supported by the current configuration. Developers should review their application logic and ensure that it does not exceed the limits imposed by the endpoint mapper.

Related Errors

  • EPT_E_NO_MORE: Indicates that no more resources can be allocated due to resource exhaustion.
  • ERROR_INSUFFICIENT_RESOURCES: General error indicating insufficient system resources for a requested operation.

FAQ

Q: What does EPT_S_NOT_REGISTERED mean?

A: It indicates that there are no more endpoints available from the endpoint mapper, typically in scenarios involving network or resource allocation operations.

Q: How can I resolve this error?

A: Review and adjust your application logic to ensure it does not exceed the limits imposed by the endpoint mapper. Ensure proper management of resources and avoid overallocation.

Summary

The EPT_S_NOT_REGISTERED error code is a generic reference indicating that all available endpoints have been allocated, preventing further allocations from being made. Developers should carefully manage resource allocation to prevent this error from occurring.