This is to work around a compatability issue with the Azure Virtual Desktop Web Client File Sharing:

Copy and paste from the Remote Desktop web client:

The web client currently supports copying and pasting text only. Files can't be copied or pasted to and from the web client. Additionally, you can only use Ctrl+C and Ctrl+V to copy and paste text.

Saving files directly to the Downloads folder redirect isn't supported. This can be an issue from remote apps not having access to a full file explorer to copy and paste files.

LogonScript-Folder-Move.ps1 would be configured as a Logon Script on the session hosts. Once users login to the host, it attempts to map the RDWebClient Redirect download directory to a PSDrive and creates a folder within the users profile. The script runs a check on that created folder every five seconds. If a file is written to the directory, the script moves the file to the mapped PSDrive. This triggers the download on the remote browser.

Set the variables for Source and Target in the LogonScript-Folder-Move.ps1

# Variables to Set #
$dest = "X:\"
$sourcePath = "$($env:USERPROFILE)\Downloads\WebClient"
$credUserName = "localadmin"
# End to Variables to Set #

You will want your $sourcePath to be located within the users writeable profile.

Create a password.txt file to save your password for a Local Admin account:

$password = ConvertTo-SecureString -String "MYPASSWORD" -AsPlainText -Force
$password | ConvertFrom-SecureString | Out-File password.txt

The password.txt file much be generated per server and needs to be in the same directory as the LogonScript-Folder-Move.ps1

Integrate with Azure Key Vault to eliminate the need for the password.txt