ERROR_RESOURCE_REQUIREMENTS_CHANGED - 756 (0x2F4)

Technical Meaning

The ERROR_RESOURCE_REQUIREMENTS_CHANGED error code indicates that a device driver or system component has successfully completed a query-stop operation, but the resource requirements of the device have changed. This typically means that the device now requires different resources than those previously allocated.

Error Details

This error is commonly encountered during operations where the system queries a device to determine its current state and resource usage. If the device reports that it has changed its resource requirements, this error code is returned to indicate that the change must be addressed before proceeding with further operations.

Usage Context

This error can occur in various contexts within Windows, such as when a driver or system component queries a device for its current state and finds that the device's resource requirements have altered. It may also appear during power management operations where devices are queried to determine their readiness for stop or resume states.

Developer Interpretation

When this error is returned, it signifies that the device has reported a change in its resource requirements after a query-stop operation. Developers should ensure that any subsequent operations take into account these new requirements and adjust as necessary. This may involve reconfiguring resources, retrying the operation with updated parameters, or handling the device's state changes appropriately.

Related Errors

• ERROR_DEVICE_NOT_READY (105)
• `ERROR_IO_RESOURCErawtypes