How to use Windows 10 RemoteFX with GPU acceleration and sound in Hyper-v

I was looking for a way to pass through GPU acceleration to virtual machines for some processing tasks. However, most methods (such as DDA or VMware ESXi) requires specific server hardware, server hypervisor OS, support CPU & motherboard firmware. Sadly, I don’t have matching specification to use those methods.

Then I come across RemoteFX. While it’s not a full feature GPU pass through, it serves my current needs with my limited availability for other methods. Unfortunately Microsoft is disabling (updates after July 14, 2020) and removing RemoteFX support by February 9, 2021.

Based on your Windows 10 version and your updates, you may find that RemoteFX is disabled. But there’s still ways to make it work.

Moreover, if you have trouble with sound or connecting using remote desktop, I have a solution for you.

RemoteFX for Windows 10 version 1803 or earlier

RemoteFX is supported in these versions:

start Hyper-V manager
go to Hyper-V Settings > Physical GPUs
select your GPU
check the box Use this GPU with RemoteFX
click OK

select your virtual machine
click Settings…
click Add Hardware > RemoteFX 3D Video Adapter
click Add
update RemoteFX settings for your needs
click OK

That is. Start the virtual machine and you should have RemoteFX working for your VM.

RemoteFX for Windows 10 version after 1803 without Windows update after July 14, 2020

In this case, RemoteFX still works if your virtual machine already have RemoteFX adapter added. But you don’t have the option to add new RemoteFX adapter from the Hyper-V Manager:

It’s dimmed and you won’t be able to add RemoteFX. Moreover, The Physical GPUs option is no longer shown in Hyper-V Settings.

But you can still add RemoteFX adapter using PowerShell:

note the name of your virtual machine
start PowerShell as Administrator
run command: Add-VMRemoteFx3dVideoAdapter -VMname <name>

Now check your virtual machine settings at Hyper-V manager and you should see RemoteFX adapter added.

RemoteFX for Windows 10 version with Windows update after July 14, 2020

You will start to receive the following error if you try to start a virtual machine with RemoteFX adapter:

This is because Microsoft’s updates after July 14, 2020 would disable RemoteFX due to a vulnerability.

All hope is not lost. You can re-enable it using Powershell:

start PowerShell as Administrator
run command: Get-VMRemoteFXPhysicalVideoAdapter

disabled — **Enabled** attribute set to **False**

note the name of the graphic card
run command: Enable-VMRemoteFXPhysicalVideoAdapter -Name “<graphic card name>”

Now try again and your virtual machine with RemoteFX adapter should be starting ok.

If you want to add new RemoteFX adapter, check out powershell command Add-VMRemoteFx3dVideoAdapter discussed in last section.

Troubleshooting

Video remoting was disconnected

If you have this error, you need to update a setting in your virtual machine using Group Policy Editor.

you can sign in to your virtual machine by not using Enhanced Session Mode or remove the RemoteFX adapter for now
run gpedit.msc (Group Policy Editor) as Administrator
go to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Remote Session Environment
double click on Use WDDM graphics display driver for Remote Desktop Connections (note: this config is only available Windows 10 version 1903 or after. Update your VM if needed)
select Disabled
click Apply
reboot your VM

You should now be able to connect using Enhanced Session Mode.

RDP failed to connect

If you receive this error, you need to disable Use WDDM graphics display driver for Remote in your virtual machine as discussed in the last troubleshooting section.

Disable Windows Automatic Update

Microsoft has scheduled to remove RemoteFX by February 2021. If you want to continue to use RemoteFX after that, you would need to avoid Windows Update at that time.

One way is to disable Windows Automatic Update.

IMPORTANT: continue using Windows without security updates pose security risk to your system. Do not disable unless necessary.

To disable Windows Automatic Update, follow the steps below:

type services in search box
run App Services
scroll to Windows Update
double click to bring up Properties screen
select Disabled for Startup type
click Stop
click Apply

Security Risk

RemoteFX has a remote code execution vulnerability (CVE-2020-1036) that has no patch to fix. As a result, Microsoft decides to remove the RemoteFX feature to eliminate the risk.

IMPORTANT: continue using RemoteFX poses security risk to your system. Use it at your own risk or stop using RemoteFX to avoid the risk.

This Post Has 9 Comments

Yesdomin
24 Nov 2020 Reply

PS C:\Windows\system32> Enable-VMRemoteFXPhysicalVideoAdapter -Name “NVIDIA Quadro FX 5800”
WARNING: We no longer support the RemoteFX 3D video adapter. If you are still using this adapter, you may become
vulnerable to security risks. Learn more (https://go.microsoft.com/fwlink/?linkid=2131976)
Enable-VMRemoteFXPhysicalVideoAdapter : The operation failed.
An unexpected error occurred: Provider is not capable of the attempted operation (0x80041024).
The operation failed.
The Hyper-V Virtual Machine Management service encountered an unexpected error: Provider is not capable of the
attempted operation (0x80041024).
At line:1 char:1
+ Enable-VMRemoteFXPhysicalVideoAdapter -Name “NVIDIA Quadro FX 5800”
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Enable-VMRemoteFXPhysicalVideoAdapter], VirtualizationException
+ FullyQualifiedErrorId : OperationFailed,Microsoft.HyperV.PowerShell.Commands.EnableVMRemoteFXPhysicalVideoAdapte
r
1. Alan Chan
  27 Nov 2020 Reply
  
  This looks like issues with your Hyper-V, probably not an error specific to RemoteFX.
  Make sure your Hyper-V is working properly and try this again.
em00k
13 Jan 2021 Reply

Work perfectly thanks!
1. Alan Chan
  15 Feb 2021 Reply
  
  You are welcome
Creepy
17 Mar 2021 Reply

Hi, I have windows 10 20H2, and I didn everything. But it still doesnt allow me to add remoteFX to my Hyper-V virtual mmachine. Can you please help me with that? Thanks
1. Alan Chan
  1 Apr 2021 Reply
  
  Follow the steps described in section RemoteFX for Windows 10 version with Windows update after July 14, 2020.
  
  If following these steps does not work, that proper means your Windows 10 version has updates that already removed RemoteFX completely.
  Officially, Microsoft will remove RemoteFX totally through their security updates on April 13, 2021.
8675309
12 Oct 2021 Reply

Thats a shame but not surprising given the direction they went
Aleksei Mukhin
29 Oct 2021 Reply

$vm = “Test”
Add-VMRemoteFx3dVideoAdapter -VMname $vm
Get-VMRemoteFXPhysicalVideoAdapter
Enable-VMRemoteFXPhysicalVideoAdapter -Name “NVIDIA GeForce GTX 1050 Ti”

И все работает.
Robin Majumdar
22 Feb 2022 Reply

Similar – W10 20H2 (Enterprise) and no luck… existing VMs (imaged from 17xx / 18xx W10 releases) that had RemoteFX are unable to start and attempting the workaround published above in an Administrator Powershell session results in :

PS C:\WINDOWS\system32> Enable-VMRemoteFXPhysicalVideoAdapter -Name “NVIDIA Quadro P2000”
WARNING: We no longer support the RemoteFX 3D video adapter. If you are still using this adapter, you may become
vulnerable to security risks. Learn more (https://go.microsoft.com/fwlink/?linkid=2131976)
Enable-VMRemoteFXPhysicalVideoAdapter : No device found to run this cmdlet on.
At line:1 char:1
+ Enable-VMRemoteFXPhysicalVideoAdapter -Name “NVIDIA Quadro P2000”
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Enable-VMRemoteFXPhysicalVideoAdapter], VirtualizationException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.EnableVMRemoteFXPhysicalVideoAdapt
er