RPC_X_SS_IN_NULL_CONTEXT - 1775 (0x6EF)
A null context handle was passed from the client to the host during a remote procedure call.
Updated: Feb 21, 2026
Technical Meaning
The error code RPC_X_SS_IN_NULL_CONTEXT indicates that a null context handle was passed from the client to the host during a remote procedure call. This implies that an operation attempted to use a context handle, which is expected to be valid and non-null.
Error Details
This error typically occurs when a client initiates a remote procedure call (RPC) without providing a valid context handle. The context handle is crucial for maintaining state or session information between the client and the host during an RPC operation. Passing a null handle can lead to undefined behavior, as the host cannot properly identify or manage the request.
Usage Context
This error is relevant in scenarios where an application makes use of remote procedure calls, particularly those that require context-specific operations. The presence of this error suggests that the client failed to provide necessary context information, which could be due to programming errors, incorrect usage, or other issues.
Developer Interpretation
Developers should interpret this error as a sign that the RPC operation was initiated without proper context setup. This can occur in various scenarios, such as:
- Incorrect initialization of client-side state before making an RPC call.
- Failure to maintain valid session handles across multiple calls.
- Bugs or errors in the application logic that result in null handle usage.
Related Errors
RPC_X_SS_CONTEXT_DAMAGED: Indicates a damaged context handle, which might be related but distinct from a null handle.RPC_X_SS_CANT_GET_CALL_HANDLE: Suggests issues with obtaining necessary call handles during an RPC operation.
FAQ
Q: What does the error code 1775 (0x6EF) mean?
A: The error code indicates that a null context handle was passed from the client to the host during a remote procedure call, leading to undefined behavior or failure of the operation.
Q: How can I resolve this issue in my application?
A: Ensure that all context handles used in RPC operations are properly initialized and not null. Verify that your application logic correctly manages session states and handles.
Summary
The RPC_X_SS_IN_NULL_CONTEXT error signifies a critical failure in passing valid context information during an RPC operation. Developers should ensure proper handling of context data to avoid this issue, which can lead to unpredictable behavior or operational failures.