Knowledge

RPC_S_INVALID_OBJECT - 1900 (0x76C)

The object universal unique identifier (UUID) is the nil UUID.

Updated: Feb 21, 2026

Technical Meaning

The error code RPC_S_INVALID_OBJECT with the numeric value 1900 and hexadecimal representation 0x76C indicates that a Universal Unique Identifier (UUID) used in a Remote Procedure Call (RPC) context is the nil UUID. The nil UUID, represented as {00000000-0000-0000-C000-000000000046}, signifies an invalid or unspecified object identifier.

Error Details

This error typically arises when a function or method expecting a valid UUID receives the nil UUID. The nil UUID is often used to indicate that no specific object is being referenced, but in certain contexts, it can lead to errors if not properly handled.

Usage Context

The RPC_S_INVALID_OBJECT error code is commonly encountered in scenarios where RPC-based operations are performed and require a valid object identifier. This includes various Windows API functions and services that rely on UUIDs for identifying objects or resources.

Developer Interpretation

When encountering this error, developers should ensure that the UUID passed to an RPC function is not the nil UUID unless explicitly intended. It is crucial to validate input parameters and handle cases where a valid object identifier is required.

Related Errors

  • RPC_S_INVALID_BINDING: Indicates that the binding information provided is invalid.
  • RPC_S_NO_CONTEXT_MAPPED: Occurs when no context can be mapped for the specified binding.
  • RPC_E_CHANGED_MODE: Indicates that an operation cannot be performed because the RPC runtime has changed its mode.

FAQ

Q: What does RPC_S_INVALID_OBJECT mean?

A: It indicates that a nil UUID was passed to an RPC function, which is not valid unless specifically intended.

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

A: Validate the UUID parameter before passing it to RPC functions and ensure that a valid object identifier is used when required.

Summary

The RPC_S_INVALID_OBJECT error code signifies an issue with the use of nil UUIDs in RPC operations. Developers should carefully validate input parameters and handle cases where a specific object identifier is necessary to avoid this error.