USB Pass-Through From Windows 8.1 Host To Windows Server 2012 R2 VM

Question

I want to be able to connect with a Windows Mobile Device through Windows Mobile Device Center, within a Virtual Machine.  When connecting through the Hyper-V Manager and through Remote Desktop, under "Other supported RemoteFX USB devices",
I can see the Symbol USB Sync Cradle.  In the VM, in Device Manager, I don't see a USB connection.  In the VM, I don't see any meaningful errors in the Event Viewer.
Host:  Windows 8.1 Enterprise Hyper-V on a Domain.  Upgraded from Windows 8.1 Pro.  When this computer was originally installed with Windows 8 Pro, Hyper-V was enabled.  I removed Hyper-V, and installed VMWare Player, because I wanted
USB Pass-through.  I then uninstalled VMWare and installed VirtualBox.  Recently, I uninstalled VirtualBox, upgraded to Windows 8.1 Enterprise, and enabled Hyper-V.
Virtual Machine OS: Windows Server 2012 R2 on a Workgroup.  Started out with being a VMWare VM, using VMWare Player.  Moved to VirtualBox.  USB Pass-through was working in both those virtual environments.  Used Disk2VHD to convert the
VM to a VHDX file.
On the Host:
Windows Mobile Device Center is connected to a Motorola Windows Mobile Device (MC959X) sitting in a Symbol USB Cradle.  The OS on the scanner is Windows Embedded Handheld 6.5 Classic CE OS 5.2.29217 (Build 29217.5.3.12.26).  Advanced Networking
(USB to PC) is not enabled.
Enabled RemoteFX. 
In the RDP file, and in the Registry, added the GUID's for:
WPD "{eec5ad98-8080-425f-922a-dabf3de3f69a}";
Windows Mobile "{6AC27878-A6FA-4155-BA85-F98F491D4F33}";
USB Device "{88BAE032-5A81-49f0-BC3D-A4FF138216D6}";
Windows CE USB Device "{25dbce51-6c8f-4a72-8a6d-b54c2b4fc835}";
GUID_DEVINTERFACE_USB_DEVICE "{A5DCBF10-6530-11D2-901F-00C04FB951ED}"
Ran "sfc /scannow"
All Microsoft Updates are current.
What am I missing?

Answer 1

I hope it's something like that. Those features have been installed.  Here's what PowerShell shows is installed:
PS C:\Windows\system32> Get-WindowsFeature |Where {$_.Installed -eq "True"} | ft DisplayName, Installed
DisplayName                                                                                                  
Installed
File and Storage Services                                                                                         
True
File and iSCSI Services                                                                                           
True
File Server                                                                                                       
True
Storage Services                                                                                                  
True
Remote Desktop Services                                                                                           
True
Remote Desktop Licensing                                                                                          
True
Remote Desktop Session Host                                                                                       
True
Web Server (IIS)                                                                                                  
True
Web Server                                                                                                        
True
Common HTTP Features                                                                                              
True
Default Document                                                                                                  
True
Directory Browsing                                                                                                
True
HTTP Errors                                                                                                       
True
Static Content                                                                                                    
True
HTTP Redirection                                                                                                  
True
Health and Diagnostics                                                                                            
True
HTTP Logging                                                                                                      
True
Performance                                                                                                       
True
Static Content Compression                                                                                        
True
Security                                                                                                          
True
Request Filtering                                                                                                 
True
Windows Authentication                                                                                            
True
Application Development                                                                                           
True
.NET Extensibility 3.5                                                                                            
True
.NET Extensibility 4.5                                                                                            
True
ASP.NET 3.5                                                                                                       
True
ASP.NET 4.5                                                                                                       
True
ISAPI Extensions                                                                                                  
True
ISAPI Filters                                                                                                     
True
Management Tools                                                                                                  
True
IIS Management Console                                                                                            
True
.NET Framework 3.5 Features                                                                                       
True
.NET Framework 3.5 (includes .NET 2.0 and 3.0)                                                                    
True
.NET Framework 4.5 Features                                                                                       
True
.NET Framework 4.5                                                                                                
True
ASP.NET 4.5                                                                                                       
True
WCF Services                                                                                                      
True
TCP Port Sharing                                                                                                  
True
Ink and Handwriting Services                                                                                      
True
Media Foundation                                                                                                  
True
Remote Server Administration Tools                                                                                
True
Role Administration Tools                                                                                         
True
Remote Desktop Services Tools                                                                                     
True
Remote Desktop Licensing Diagnoser Tools                                                                          
True
Remote Desktop Licensing Tools                                                                                    
True
SMB 1.0/CIFS File Sharing Support                                                                                 
True
User Interfaces and Infrastructure                                                                                
True
Graphical Management Tools and Infrastructure                                                                     
True
Desktop Experience                                                                                                
True
Server Graphical Shell                                                                                            
True
Windows PowerShell                                                                                                
True
Windows PowerShell 4.0                                                                                            
True
Windows PowerShell 2.0 Engine                                                                                     
True
Windows PowerShell ISE                                                                                            
True
WoW64 Support                                                                                                     
True