This is a bug which is triggered by issues with USB devices, and there are two known causes:
1. Stale USB drive connection. At some point a USB drive was connected, and when it was removed the connection wasn't completely cleared. In this case, reconnecting any USB device usually allows Windows to refresh the connections.
2. A device is connected via USB that Windows identifies as a disk drive, but which can't be accessed. One example of this was a mobile phone that had been plugged in to a USB slot to charge. Unplugging it stopped the error message coming up. Subsequently plugging it in again did not cause the problem to recur.
This is a bug which is triggered by issues with USB devices, and there are two known causes:
1. Stale USB drive connection. At some point a USB drive was connected, and when it was removed the connection wasn't completely cleared. In this case, reconnecting any USB device usually allows Windows to refresh the connections.
2. A device is connected via USB that Windows identifies as a disk drive, but which can't be accessed. One example of this was a mobile phone that had been plugged in to a USB slot to charge. Unplugging it stopped the error message coming up. Subsequently plugging it in again did not cause the problem to recur.
