ERROR_REQUEST_OUT_OF_SEQUENCE - 776 (0x308)
The client of a component requested an operation which is not valid given the state of the component instance.
Updated: Feb 21, 2026
Technical Meaning
This error indicates that a client attempted to perform an operation on a component, but the state of the component does not support or allow that operation at the current time. This can occur in various scenarios where the internal state of the component has changed and no longer supports the requested action.
Error Details
The ERROR_REQUEST_OUT_OF_SEQUENCE error is typically returned by components that manage a sequence of operations, such as file systems, network protocols, or device drivers. The specific context can vary depending on the component involved. For example, in a file system, this might occur if an attempt was made to write data to a file when it is currently marked for deletion.
Usage Context
This error code is used by various Windows components and APIs to indicate that the operation requested by the client is not valid given the current state of the component. It can be encountered in different scenarios, such as:
- File system operations where a file or directory has been marked for deletion.
- Network protocols where an attempt was made to send data on a connection that is currently closed.
- Device drivers where a request was made after the device had entered a specific state (e.g., powered off).
Developer Interpretation
When encountering this error, developers should consider the following:
- Verify the current state of the component before performing an operation. Ensure that the component is in a valid state to support the requested action.
- Check for any changes or transitions in the component's state that might affect the validity of the request.
- Review the documentation and specifications of the specific API or component to understand its operational constraints and valid states.
Related Errors
ERROR_INVALID_PARAMETER(0x57)ERROR_FILE_NOT_FOUND(0x2)ERROR_PATH_NOT_FOUND(0x3)
FAQ
Q: What does the ERROR_REQUEST_OUT_OF_SEQUENCE error mean?
A: This error indicates that a requested operation is not valid given the current state of the component.
Q: How can I resolve this issue?
A: Ensure that the component is in a valid state before performing the operation. Check for any changes or transitions in the component's state and verify the documentation to understand its operational constraints.
Summary
The ERROR_REQUEST_OUT_OF_SEQUENCE error (0x308) is used by various Windows components to indicate an invalid request given the current state of the component. Developers should ensure that operations are performed only when the component is in a valid state and review relevant documentation for specific constraints.