RPC_X_NO_MORE_ENTRIES - 1772 (0x6EC)
The list of RPC servers available for the binding of auto handles has been exhausted.
Updated: Feb 21, 2026
Introduction
The RPC_X_NO_MORE_ENTRIES error code (1772, 0x6EC) is encountered when the system has exhausted its list of available Remote Procedure Call (RPC) servers for binding auto handles. This article provides a detailed technical analysis and interpretation of this error.
Technical Background
Remote Procedure Call (RPC) is a protocol that allows applications to call functions on other computers as if they were local procedures. In Windows, RPC uses various mechanisms to manage connections and handle requests efficiently. One such mechanism involves the use of auto handles, which are automatically managed by the system for certain operations.
Error Details
The RPC_X_NO_MORE_ENTRIES error code specifically indicates that the system has run out of available entries in its list of RPC servers. This can occur when multiple applications or services attempt to bind to the same set of RPC servers simultaneously, and the system's capacity is exceeded.
Common Causes
- Exceeding Limits: The number of simultaneous bindings to RPC servers has reached a predefined limit.
- Incorrect Usage Context: Applications may attempt to perform operations that require more server entries than are available in the current context.
Real-World Context
This error is typically encountered in scenarios where multiple applications or services need to bind to RPC servers for communication. For example, networked applications that rely on RPC for inter-process communication might encounter this issue if they attempt to establish too many connections simultaneously.
Is This Error Critical?
The criticality of the RPC_X_NO_MORE_ENTRIES error depends on the specific application and its requirements. If the application is designed to handle such scenarios gracefully, it may not be a severe issue. However, in cases where the application relies heavily on RPC for core functionality, this error could indicate a need for capacity planning or optimization.
How to Diagnose
Reviewing Operation Context
- Check the number of active bindings and connections currently established by your application.
- Verify that the operation context allows for the required number of bindings.
Validating Parameters
- Ensure that all parameters passed during binding operations are valid and within acceptable limits.
- Confirm that the correct type of handle is being used for the operation.
How to Resolve
- Correct Parameter Usage: Ensure that the parameters passed during binding operations are correctly configured.
- Adjust Operation Context: If possible, adjust the application's context or configuration to allow for more bindings. This might involve increasing system limits or optimizing resource usage.
- Restore Data: In cases where data corruption is suspected, restore from a backup if available.
- Retry Operation with Valid Inputs: Attempt to perform the operation again with valid inputs and ensure that all parameters are correctly set.
Developer Notes
Developers should be aware of the limitations imposed by RPC server binding mechanisms and design applications accordingly. Implementing error handling and retry logic can help mitigate issues related to this error.
Related Errors
RPC_S_SERVER_UNAVAILABLE: Indicates that a required RPC server is not available.RPC_X_BAD_STUB_DATA: Occurs when the stub data for an RPC call is invalid or corrupted.
FAQ
Q: What does the RPC_X_NO_MORE_ENTRIES error mean?
A: It indicates that the system has exhausted its list of available RPC servers for binding auto handles.
Q: How can I prevent this error from occurring?
A: Ensure proper resource management and avoid exceeding the predefined limits on simultaneous bindings. Optimize application design to handle such scenarios gracefully.
Q: Can this error be critical?
A: The severity depends on the application's requirements. If the application relies heavily on RPC for core functionality, this error could indicate a need for capacity planning or optimization.
Summary
The RPC_X_NO_MORE_ENTRIES error code (1772, 0x6EC) is a specific technical issue related to the exhaustion of available RPC server entries during binding operations. Understanding its context and causes can help in diagnosing and resolving issues effectively.