ERROR_CLIENT_SERVER_PARAMETERS_INVALID - 597 (0x255)
The parameter(s) passed to the server in the client/server shared memory window were invalid. Too much data may have been put in the shared memory window.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_CLIENT_SERVER_PARAMETERS_INVALID error code (597, 0x255) indicates that the parameters passed to a server in a client/server shared memory window are invalid. This typically occurs when too much data is placed into the shared memory window or when the data format does not match expectations.
Error Details
This error suggests that the client has provided incorrect or excessive information during communication with the server through a shared memory mechanism. The server expects specific parameters in a certain format, and if these are not met, this error is generated.
Usage Context
This error code is relevant to scenarios where applications use inter-process communication (IPC) mechanisms such as shared memory for data exchange between client and server processes. It can also occur when using Windows API functions that rely on shared memory for communication.
Developer Interpretation
When encountering this error, developers should ensure that the parameters passed to the server are correct and within expected limits. This includes verifying the size and format of the data being sent through the shared memory window. Developers must adhere to the documented requirements for parameter usage in the relevant API documentation.
Related Errors
ERROR_INVALID_PARAMETER(1258, 0x4E6)ERROR_INSUFFICIENT_BUFFER(122)ERROR_INVALID_DATA(1381, 0x559)
These errors may also indicate issues with parameter validation or data integrity.
FAQ
Q: What does the ERROR_CLIENT_SERVER_PARAMETERS_INVALID error mean?
A: It indicates that invalid parameters were passed to a server in a client/server shared memory window, typically due to incorrect data format or excessive data size.
Q: How can I resolve this issue?
A: Ensure that the parameters you are passing meet the requirements specified by the API documentation. Verify the size and format of the data being sent through the shared memory window.
Summary
The ERROR_CLIENT_SERVER_PARAMETERS_INVALID error code (597, 0x255) is a specific indication that invalid parameters were passed to a server in a client/server shared memory context. Developers should ensure correct parameter usage and adhere to documented requirements for successful communication through shared memory mechanisms.