I am running Windows 10 on Parallels 12 on Sierra 10.12.6. I have an external drive and hardwired network connected through the USB-C ports. The USB-C ports drop connection at random times. If i suspend the Windows 10 VM they come back. As soon as i start the VM they drop again. I have to completely close the VM and then restart the MacBook. I then restart the VM and the ports are connected again. Has anyone seen this behavior with the setup i am describing? Let me know if you need any more information.
Hello @EricH7 Please refer this article http://kb.parallels.com/111725 and check it helps. Thanks, Shathish
Shathish, thank you for the reply but that is not the problem. When the Mac sees the external hard drive then my Parallels VM sees it and I can access it. What happens is that the hard drive drops from the Mac...the Mac no longer sees the hard drive. If I suspend or close the Parallels VM then the hard drive comes back. The Mac sees the hard drive. If I start or unsuspend the VM the hard drive immediately drops again and the Mac cannot see it. I have to close the VM and restart my Mac for the Mac and the VM to see the hard drive again. Also I changed the cable that attaches the hard drive to the Mac and am getting the same issue.
Hi @EricH7, please enable USB 3.0 feature in the Virtual Machine configuration: Virtual Machine menu > Configure... > Hardware > USB and install the drivers for USB 3.0 to check if the issue persists.
Paul, the drivers for USB 3.0 were already installed but i did see two things when i was in that dialog. "Share Bluetooth devices with Windows" was unchecked and i went into "USB Connection Preferences" and "Connect it to the active virtual machine" was checked. So i set it to "Connect it to my Mac" and checked "Share Bluetooth devices with Windows". I will monitor the hard drive to see if it drops today. Thanks for your help.
