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Code 31 - CM_PROB_FAILED_ADD

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This Device Manager error message indicates that the function driver for the device returned an error from its AddDevice routine.

Error Code

31

Display Message

"This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)"

Update the device driver.

For driver developers

The DEVPKEY_Device_ProblemStatus property on the device should indicate the failure code returned by the function driver.

If the function driver is a WDF driver, this problem code may be the result of the driver returning an error from its EVT_WDF_DRIVER_DEVICE_ADD callback function.