RPC_S_PROTSEQ_NOT_FOUND - 1744 (0x6D0)
The RPC protocol sequence was not found.
Updated: Feb 21, 2026
Technical Meaning
The RPC_S_PROTSEQ_NOT_FOUND error code, with the numeric value 1744 (0x6D0 in hexadecimal), indicates that a required Remote Procedure Call (RPC) protocol sequence could not be located. This typically occurs when an RPC client attempts to initiate communication using a specified protocol sequence that is either missing or incorrectly configured on the system.
Error Details
This error suggests that there is a mismatch between the expected and actual configuration of the RPC services, possibly due to missing components, incorrect service registration, or misconfiguration in the network setup. The protocol sequence refers to a specific combination of transport protocols (such as TCP/IP) and RPC protocols used for communication.
Usage Context
This error can occur in various scenarios where RPC-based services are involved, such as distributed applications that rely on RPC for inter-process communication or when attempting to establish connections with remote servers using RPC.
Developer Interpretation
Developers should interpret this error code as an indication that the specified protocol sequence is not available. This could be due to several reasons, including missing dependencies, incorrect service configurations, or network issues. The developer must ensure that all required components are correctly installed and configured before attempting to use RPC services.
Related Errors
RPC_S_SERVER_UNAVAILABLE(1728): Indicates the server is not available for communication.RPC_S_INVALID_BINDING(1736): Suggests an invalid binding context was used.RPC_S_CALL_FAILED(1740): Implies a failure in the RPC call itself.
FAQ
Q: What does the error code 1744 mean?
A: The error code 1744, or RPC_S_PROTSEQ_NOT_FOUND, indicates that the specified Remote Procedure Call (RPC) protocol sequence was not found on the system. This typically occurs when an RPC client attempts to communicate using a protocol sequence that is missing or incorrectly configured.
Q: How can I resolve this error?
A: Ensure all required components are installed and correctly configured, and verify the network setup to ensure proper communication between the client and server.
Summary
The RPC_S_PROTSEQ_NOT_FOUND error code (1744) is a specific indication that a required Remote Procedure Call protocol sequence could not be located. Developers should focus on ensuring all necessary components are correctly installed and configured, and verify network settings to resolve this issue.