Version 1.2.945 of the Windows Desktop client for WVD has been released to all users!

DavidBelanger 

Version 1.2.675.0 works fine. Fails on 1.2.790.0 & 1.2.945.

As 1.2.675 does not enumerate apps from the ARM URL, its not viable for anyone testing the Spring 2020 WVD release to downgrade the client (workaround below).

For further testing, I used msrdc.exe with a custom RDP file to connect directly to the Win10 clients to rule out the WVD gateway /session host infrastructure encapsulation and redirection. I also validated against Windows 1909 and 1903 builds for the receiving host. All test cases exhibit the same symptoms. (1.2.675.0 works fine with smartcard. Smartcard logon fails on 1.2.790.0 & 1.2.945)

WORKAROUND: Implementing the following to start the smartcard service on logon provides a workaround for client versions 1.2.790.0 & 1.2.945. Not ideal but it works..

Create a scheduled task to execute on Application Event ID=9027 (Source: Desktop window Manager):

Command= "net.exe"

Arguments = "start SCardSvr"

Let me know if I can help with any further diagnostics details. 

S.