RPC_S_ALREADY_REGISTERED - 1711 (0x6AF)
The object universal unique identifier (UUID) has already been registered.
Updated: Feb 21, 2026
Technical Meaning
The RPC_S_ALREADY_REGISTERED error code indicates that an attempt was made to register a Universal Unique Identifier (UUID) that has already been registered in the system. This UUID is used for identifying and registering Remote Procedure Call (RPC) interfaces, which are essential components of distributed computing environments.
Error Details
The numeric value of this error is 1711 (0x6AF), and it specifically pertains to a situation where an RPC interface identifier (UUID) has already been registered. This can occur in scenarios where multiple attempts are made to register the same UUID, or when there is a conflict between different components attempting to use the same UUID.
Usage Context
This error code is typically encountered in applications that utilize the Windows Remote Procedure Call (RPC) services for inter-process communication and distributed computing. It can also appear in scenarios where custom RPC interfaces are being developed and registered within an application or system environment.
Developer Interpretation
When this error code is returned, it indicates that a UUID has already been registered with the RPC service. This suggests that either there was a previous registration of the same UUID, or there might be a conflict between different components attempting to register the same identifier. Developers should ensure that UUIDs are properly managed and unique within their application environment.
Related Errors
RPC_S_UUID_LOCAL_ONLY(0x6B1): Indicates that an attempt was made to use a local-only UUID in a context where it is not allowed.RPC_S_UUID_NO_ADDRESS(0x6B2): Indicates that the RPC service could not find an address for the specified UUID.
FAQ
Q: What does the error code 1711 mean?
A: The error code 1711, or RPC_S_ALREADY_REGISTERED, indicates that a Universal Unique Identifier (UUID) has already been registered with the RPC service.
Q: How can I resolve this issue?
A: Ensure that UUIDs are unique and properly managed within your application. Check for any duplicate registrations and correct them to avoid conflicts.
Summary
The RPC_S_ALREADY_REGISTERED error code is a specific technical indicator used by the Windows RPC service when an attempt is made to register a UUID that has already been registered. Developers should ensure proper management of UUIDs in their applications to avoid this error.