USB device identification/Serial String of Device Instance ID changes on Windows 10 Virtual machine ( Azure/AWS) lead a Device Enumeration problem on Windows

Question

Problem Statement: We have a USB-based device that is plugged in on a Windows 10 machine.

below is the Device Instance ID of the plugged-in USB device under Device Manager. USB\VID_XXXX&PID_XXXX`SSSSSSSSS-SSSSSSSSS` Where SSSSSSSSS-SSSSSSSSS is Device Serial Number String.

Now create an Azure virtual Desktop machine( Windows 10) and enable the RemoteFx feature on machines to enable USB device redirection from Local Windows 10 machine to Azure Virtual Desktop machine.

Connect local Windows 10 machine with Azure Virtual Desktop machine using RDP (RemoteFx).

The USB redirection is successful. USB Device is detected under Device Manager but on Virtual machine, USB Device Serial String is changed, Very strange behaviour.

New Device Instance ID: USB\VID_XXXX&PID_XXXX&REV_000X\\3&XXXXXXX&0&TSUSB-SESSION2-XXXXXXXXXX&3&XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX

Do you know why USB device identification/Serial String changes of Device Instance ID on Windows 10 Virtual machine ( Azure/OpenStack)?

I appreciate it if someone could help with this issue.

Read RemoteFX feature and Windows Virtual USB Redirection document but there is no explanation for this behaviour.

Read same issue on other sites but no solution available?

Answer 1

@sandip patidar On discussion with the internal team, it was shared that USB device identification/Serial String changes of Device Instance ID is needed to provide sessions isolation for redirected USB devices.

Hope that helps.

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Answer 2

USB instance ID has been changed after USB redirection

Article | Created: 22 Mar 2023 | Modified: 06 May 2023

Applicable Products

Citrix Virtual Apps and Desktops Service Citrix DaaS

Symptoms or Error

Orignal USB device instance ID has been modified when USB device has been redirected to VDA server.

Solution

Please configure below registry key to use the serial number as the instance ID:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\icausbb\Parameters

Name: DeviceInstanceIDOption

Type: REG_DWORD

Value: 2

Restart VDA for changes to take effect.

Problem Cause

An additional suffix will be added to the USB device instance after redirection, it's expected behavior.

The USB device instance path might have additional characters at the end of the path name

when the device is redirected on 7.6.300 and later version of the VDA. To change this behavior, add the

Product ID (PID) or Vendor ID (VID) to the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\icausbb\Parameters

Name: DeviceInstanceIDOption

Type: REG_DWORD

Value: 0 (default value), 1, 2.

If “DeviceInstanceIDOption” is configured to “0” (0 being the default value), devices whose VID/PID pairs are configured to “UsingSerialNumberDevices” use the serial number as the instance ID. Other devices use “serial_number+Bus_number+port_number” as the instance ID.

If “DeviceInstanceIDOption” is configured to “1,” devices whose VID/PID pairs are configured to “UsingSerialNumberDevices” use “serial_number+Bus_number+port_number” as the instance ID. Other devices use the serial number as the instance ID.

If “DeviceInstanceIDOption” is configured to “2,” all devices use the serial number as the instance ID.

All other values are invalid and treated as “0.”