Shut down the guest Windows machine (not suspend).  In the Fusion window, right click the name of the guest machine and choose Settings.  Then click USB & Bluetooth.  Then click Advanced USB options.  Then click Remove USB Controller.  Open the Windows guest machine and then shut it down again (not suspend).  Go back to USB & Bluetooth in Fusion Settings for the guest machine and this time click Add USB Controller. 2.  Click the Apple logo in the top left of the Mac screen.  Click Security & Privacy.  For me, there was an error message that said something like "Mac is blocking VMWare process".  Click Allow.  Problem solved. 先关闭虚拟机. 在虚拟机的设置里面删除 USB 控制器 重新开机虚拟机后,关机 关机后,在虚拟机的设置里面添加 USB 控制器. 在苹果系统设置-->安全里面把安全提示禁止的许可打开. 开机,在顶部的虚拟机USB 图标,连接 APPLE USB 控制器!