My previous setup was:

MacOS 10.12 Sierra

VMWare Fusion 7.1, running

- Windows 7

- Windows 10

All was fine until I upgraded to MacOS 10.13, High Sierra.

Started VMWare Fusion, all well. Started the Windows 7 VM and my iMac crashed instantly. Split second.

Upgraded to VMWareFusion 10.0.1.

Got the "System Extension Blocked" message and allowed VMWare Fusion in the MacOS Security & Privacy settings.

But both Windows 7 and Windows 10 VM's don't see USB devices anymore. No error message, no warning. They just don't see them.

I Googled around, even saw the other post related the subject below, but no solution found.

???

Edit: Completely removed VMWare Fusion and did a clean install. Still the same problem...

Edit 2: Shouldn't there be an usbarbitrator service running in the VM's? I don't see any. Also /var/run/vmware doesn't show anything related.

Edit 3: The service usbarbitration (on the host) doesn't run. /Library/Logs/VMware USB Arbitrator Service.log contents:

2017-10-07T19:47:01.361| ServiceImpl_Daemon: PID 833

2017-10-07T19:47:01.362| ServiceImplRef: Before start().

2017-10-07T19:47:01.576| Warning: UsbarbServiceCommon: exit status 6912.

2017-10-07T19:47:01.576| ServiceImplRef: After start().

2017-10-07T19:47:01.576| ServiceImplDaemon: Exiting with code 0.

Started VMWare Fusion and started usbarbitrator by hand: sudo /Applications/VMware\ Fusion.app/Contents/Library/vmware-usbarbitrator --kext /Applications/VMware\ Fusion.app/Contents/Library/kexts/vmioplug.kext

Same results, not working, not running. And log file shows the same.

Beats me.

Yvo