RDS 2019 No Audio Azure Application Proxy

Question

Hi All

Seems like its all change since the TechNet Days, anyhow....

New RDS 2019 farm on-prem with RDWeb RDGW and Webclient.

NO audio redirection with Azure App Proxy :-(

Without Azure App Proxy and by using CustomRDPSettings and adding audiocapturemode:i:1 remote audio is passed through to the RDS app RDweb & Webclient (brilliant).

Here's how to add a CustomRDPSetting:

Set-RDSessionCollectionConfiguration –CollectionName "MyCollectionName" –CustomRdpProperty "use redirection server name:i:1 `n audiocapturemode:i:1"

the `n (back-tick n) is required - it means new line. The RDP file will now contain the Custom Property

use redirection server name:i:1 was already there so we have to add both to the PowerShell command

The registry is updated on the local RDCB here:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\CentralPublishedResources\PublishedFarms\TU\DeploymentSettings

HERE'S the PROBLEM
Added Azure AD Application Proxy Connector and published as here: https://learn.microsoft.com/en-gb/azure/active-directory/app-proxy/application-proxy-integrate-with-remote-desktop-services

BUT no audio tick box is presented as a user option when an app is chosen, also audiocapturemode:i:1 is NOT in the downloaded RDP file. This seems to indicate Azure is not reading the Custom Properties from the RDCB?

So where can CustomRDPProperties be set?

Many thanks
Lea

Answer 1

So this new Docs platform so far is somewhat disappointing, in the old days of Tech Net Forums the community was buzzing with responses especially from MS certified folk. What a shame :-(

Have I posted in the wrong place, or is the only method based on tags?

Answer 2

Update:

It's not Azure App proxy, the on-prem RDCB 'lost' its CustomRDPProperties settings, missing from the registry, not sure why but it could be related to either Azure App Proxy install OR the creation of a new Collection, audiocapturemode:i:1 was missing in action.

Ran the required PS again (inc Azure pre-auth) and resolved, Mic is now present and audio is redirected from local device to RDS app :-)

Set-RDSessionCollectionConfiguration –CollectionName "MyCollectionName" –CustomRdpProperty "use redirection server name:i:1 `n audiocapturemode:i:1 `n pre-authentication server address:s: https://MyAppName-mycompany.msappproxy.net/ `nrequire pre-authentication:i:1"

Useful RDP file check, run from RDCB:

(get-wmiobject -Namespace root\cimv2\terminalservices -Class Win32_RDCentralPublishedRemoteDesktop).RDPFileContents

Phew!!