Migration with vMotion cannot proceed and issues a confusing error message when multiple USB passthrough devices are connected to the virtual machine and one or more devices are not enabled for vMotion.

The Migrate Virtual Machine wizard runs a compatibility check before a migration operation begins. If unsupported USB devices are detected, the compatibility check fails and an error message similar to the following appears: Currently connected device 'USB 1' uses backing 'path:1/7/1', which is not accessible.

You must select all USB devices on a virtual machine for migration for vMotion to be successful. If one or more devices are not enabled for vMotion, migration will fail.


Make sure that the devices are not in the process of transferring data before removing them.


Re-add and enable vMotion for each affected USB device.