With Yosemite, Fusion 7.1.2, and Windows 10, all Fusion support for external USB HD worked. Fusion would prompt for connect to Mac or Windows, or could configure a given USB HD to always connect to Windows 10. Use this configuration extensively for backups.
Now:
1. Fusion does not prompt for connect to Mac or Windows when USB HD is plugged in.
2. Can use Virtual Machine / Settings / USB & Bluetooth to connect to the USB HD and to disconnect the USB HD, but Windows 10 never shows the drive is available (in Device Manager, or USB systray control, or Explorer, etc.)
3. About a minute after connection, the BOOTCAMP vmware logs show driver errors, and a GUI error will display that says: "The connection for the USB device "My Passport (Western Digital My Passport 0820)" was unsuccessful. Driver error."
Here is a sequence of log messages:
1. Configure VMware Fusion to automatically connect to this USB HD whenever it is inserted.
2. Insert the USB HD:
2015-11-16T19:10:46.036-06:00| vmx| I120: VUsbUpdateVigorFieldsAndAutoconnect: New set of 6 USB devices
2015-11-16T19:10:46.037-06:00| vmx| I120: USB: Found device [name:Apple\ FaceTime\ HD\ Camera\ (Built-in) vid:05ac pid:8509 path:10/15/2 speed:high family:vendor,other,video,video serialnum:CC2B1V0028DGFKL0 arbRuntimeKey:4 quirks:needs-boot-camp,built-in version:2]
2015-11-16T19:10:46.037-06:00| vmx| I120: USB: Found device [name:Apple\ IR\ Receiver vid:05ac pid:8242 path:13/15/1/1 speed:low family:hid arbRuntimeKey:3 quirks:needs-boot-camp,built-in version:2]
2015-11-16T19:10:46.037-06:00| vmx| I120: USB: Found device [name:Western\ Digital\ My\ Passport\ 0820 vid:1058 pid:0820 path:13/15/1/2 speed:high family:storage serialnum:575836314531345555353330 arbRuntimeKey:e version:2]
2015-11-16T19:10:46.037-06:00| vmx| I120: USB: Found device [name:Apple\ Bluetooth\ USB\ Host\ Controller vid:05ac pid:821a path:10/15/1/1/3 speed:full family:wireless,bluetooth arbRuntimeKey:1 quirks:needs-boot-camp,bluetooth,built-in version:2]
2015-11-16T19:10:46.037-06:00| vmx| I120: USB: Found device [name:Virtual\ Bluetooth\ Adapter vid:0e0f pid:0008 speed:full family:wireless,bluetooth virtPath:usb_xhci:8 deviceType:virtual-bluetooth version:2], connected to usb_xhci:6 port 0.
2015-11-16T19:10:46.037-06:00| vmx| I120: USB: Found device [name:VMware\ Virtual\ USB\ Video\ Device:default vid:0e0f pid:000b speed:high family:video,video virtPath:ehci:0 deviceType:virtual-video info:0000001 version:2], connected to ehci port 0.
2015-11-16T19:10:55.325-06:00| vmx| I120: VUsbUpdateVigorFieldsAndAutoconnect: New set of 6 USB devices
2015-11-16T19:10:55.325-06:00| vmx| I120: USB: Found device [name:Apple\ FaceTime\ HD\ Camera\ (Built-in) vid:05ac pid:8509 path:10/15/2 speed:high family:vendor,other,video,video serialnum:CC2B1V0028DGFKL0 arbRuntimeKey:4 quirks:needs-boot-camp,built-in version:2]
2015-11-16T19:10:55.325-06:00| vmx| I120: USB: Found device [name:Apple\ IR\ Receiver vid:05ac pid:8242 path:13/15/1/1 speed:low family:hid arbRuntimeKey:3 quirks:needs-boot-camp,built-in version:2]
2015-11-16T19:10:55.325-06:00| vmx| I120: USB: Found device [name:My\ Passport\ (Western\ Digital\ My\ Passport\ 0820) vid:1058 pid:0820 path:13/15/1/2 speed:high family:storage serialnum:575836314531345555353330 arbRuntimeKey:e version:2]
2015-11-16T19:10:55.325-06:00| vmx| I120: USB: Found device [name:Apple\ Bluetooth\ USB\ Host\ Controller vid:05ac pid:821a path:10/15/1/1/3 speed:full family:wireless,bluetooth arbRuntimeKey:1 quirks:needs-boot-camp,bluetooth,built-in version:2]
2015-11-16T19:10:55.325-06:00| vmx| I120: USB: Found device [name:Virtual\ Bluetooth\ Adapter vid:0e0f pid:0008 speed:full family:wireless,bluetooth virtPath:usb_xhci:8 deviceType:virtual-bluetooth version:2], connected to usb_xhci:6 port 0.
2015-11-16T19:10:55.325-06:00| vmx| I120: USB: Found device [name:VMware\ Virtual\ USB\ Video\ Device:default vid:0e0f pid:000b speed:high family:video,video virtPath:ehci:0 deviceType:virtual-video info:0000001 version:2], connected to ehci port 0.
3. Note that Virtual Machine / USB & Bluetooth shows the My Passport drive as available but not connected. Click on "Connect My Passport...".
2015-11-16T19:14:42.614-06:00| vmx| I120: USB: Connecting pattern [path:13/15/1/2 version:2] controller []
2015-11-16T19:14:42.614-06:00| vmx| I120: USB: Connecting device 0x1000000e10580820
2015-11-16T19:14:42.614-06:00| vmx| I120: Policy_GetUSBDevAccess: checking usb devices at policy path: /vm/#_VMX/mvm/policyState/val/policySet/usbDevices/#
2015-11-16T19:14:42.614-06:00| vmx| I120: Policy_GetUSBDevAccess: allowConnect = YES
2015-11-16T19:14:42.614-06:00| vmx| I120: USBG: Created 1000000e10580820
2015-11-16T19:14:43.240-06:00| vmx| I120: VUsbUpdateVigorFieldsAndAutoconnect: New set of 6 USB devices
2015-11-16T19:14:43.240-06:00| vmx| I120: USB: Found device [name:Apple\ FaceTime\ HD\ Camera\ (Built-in) vid:05ac pid:8509 path:10/15/2 speed:high family:vendor,other,video,video serialnum:CC2B1V0028DGFKL0 arbRuntimeKey:4 quirks:needs-boot-camp,built-in version:2]
2015-11-16T19:14:43.240-06:00| vmx| I120: USB: Found device [name:Apple\ IR\ Receiver vid:05ac pid:8242 path:13/15/1/1 speed:low family:hid arbRuntimeKey:3 quirks:needs-boot-camp,built-in version:2]
2015-11-16T19:14:43.240-06:00| vmx| I120: USB: Found device [name:My\ Passport\ (Western\ Digital\ My\ Passport\ 0820) vid:1058 pid:0820 path:13/15/1/2 speed:high family:storage virtPath:usb_xhci:9 serialnum:575836314531345555353330 arbRuntimeKey:e ownerdisplay:Boot\ Camp version:2], connected to usb_xhci:7 port 0.
2015-11-16T19:14:43.240-06:00| vmx| I120: USB: Found device [name:Apple\ Bluetooth\ USB\ Host\ Controller vid:05ac pid:821a path:10/15/1/1/3 speed:full family:wireless,bluetooth arbRuntimeKey:1 quirks:needs-boot-camp,bluetooth,built-in version:2]
2015-11-16T19:14:43.240-06:00| vmx| I120: USB: Found device [name:Virtual\ Bluetooth\ Adapter vid:0e0f pid:0008 speed:full family:wireless,bluetooth virtPath:usb_xhci:8 deviceType:virtual-bluetooth version:2], connected to usb_xhci:6 port 0.
2015-11-16T19:14:43.240-06:00| vmx| I120: USB: Found device [name:VMware\ Virtual\ USB\ Video\ Device:default vid:0e0f pid:000b speed:high family:video,video virtPath:ehci:0 deviceType:virtual-video info:0000001 version:2], connected to ehci port 0.
4. Fusion now thinks 'My Passport' is connected. Virtual Machines / USB & Bluetooth now shows a 'Disconnect My Passport...' Keep the drive connected for now...
5. But after a minute, there is a timeout/error:
2015-11-16T19:16:42.613-06:00| vmx| W110: USBGA: Failed to connect device 1000000e10580820, error (4)
2015-11-16T19:16:42.614-06:00| vmx| I120: Msg_Post: Warning
2015-11-16T19:16:42.614-06:00| vmx| I120: [msg.usb.connectFailedErr] The connection for the USB device "My Passport (Western Digital My Passport 0820)" was unsuccessful. Driver error.
2015-11-16T19:16:42.614-06:00| vmx| I120: ----------------------------------------
2015-11-16T19:16:42.630-06:00| vmx| I120: USB: Disconnecting device 0x1000000e10580820
2015-11-16T19:16:42.630-06:00| vmx| I120: USBG: Disconnecting 1000000e10580820, port:0 reservedPort:7F984B90D6F0
2015-11-16T19:16:42.630-06:00| vmx| I120: USBGA: device 1000000e10580820 already disconnected from host
