Group Policy Object (GPO) template

GPO Editor

Sound for Remote Desktop Server includes *.admx and *.adml administrative template files. These template files allow to configure the product via Local GPO and/or Domain-Based GPO. Please refer to Microsoft MSDN article on managing ADMX files.

The archive file containing administrative template can be found in the installation directory: 

%ProgramFiles%\FabulaTech\Sound for Remote Desktop (Server)\policies.zip

Additionally, the administrative template files are deployed to a local GPO during product installation and can be found here: 

%WINDIR%\PolicyDefinitions\Fabulatech.admx
%WINDIR%\PolicyDefinitions\ftsndrdpsrv.admx
%WINDIR%\PolicyDefinitions\en-US\Fabulatech.adml
%WINDIR%\PolicyDefinitions\en-US\ftsndrdpsrv.adml

It's recommended to use the GPO template files provided with the latest product version of Sound for Remote Desktop Server.

Some GPO policies can be set in different locations, depending on their target (Computer Configuration, User Configuration), or their level of applicability (FabulaTech, Product). If a policy is configured in multiple locations, the following priority order applies (from highest to lowest):

  1. Computer Configuration -> Administrative Templates -> FabulaTech
  2. User Configuration -> Administrative Templates -> FabulaTech
  3. Computer Configuration -> Administrative Templates -> FabulaTech -> Sound for Remote Desktop (Server)
  4. User Configuration -> Administrative Templates -> FabulaTech -> Sound for Remote Desktop (Server)
  5. Product settings (GUI, registry, etc.)

Policies defined at a higher level override those set at lower levels.

The GPO template can be used to configure the following settings:

Setting Target Level Description
Licensing Computer Product

This policy setting is used for licensing management. The following licensing modes are used:

License Key
use the specified license key for each product server;
License Server
use a license server for centralized management of licensing;

For "License Key" type of licensing you must specify a string of the key in the corresponding field.

For "License Server" type of licensing you must specify a license server name in the name_or_ip:port format, where the port is an optional parameter.

If this policy setting is enabled, the licensing mode will be overridden by this policy setting. It means using GPO License key instead key that determined via the settings interface.

If this policy setting is disabled or not configured, the licensing mode is determined via the settings interface.

Recording compression Computer Product

This policy setting is used for setting sound compression rate during its transfer to the Server side.

If this policy setting is enabled, the compression mode for the user will be set by this policy setting.

If this policy setting is disabled or not configured, the "OPUS" compression mode will be used.

The user has the possibility to change the compression mode at any time via the settings interface, even if the policy setting is enabled.

Playback compression Computer Product

This policy setting is used for setting sound compression rate during its transfer to the Workstation side.

If this policy setting is enabled, the compression mode for the user will be set by this policy setting.

If this policy setting is disabled or not configured, the "OPUS" compression mode will be used.

The user has the possibility to change the compression mode at any time via the settings interface, even if the policy setting is enabled.

Lock Config Computer Product

This policy setting is used for locking the settings user interface of the program.

If this policy setting is enabled, the user interface containing the program settings is locked and the user can't change settings in the tray menu.

If this policy setting is disabled or not configured, the user interface containing the program settings is accessible for users.

Prefer global settings Computer Product

This policy setting determines the priority between settings configured via GPO and those configured by the user through the GUI.

If this policy setting is enabled, the GPO settings (if specified) are used even if the user has configured them manually. The user can edit the settings through the GUI, but they will not be applied.

If the policy setting is disabled or not configured, the global policies will be used only if the user has not overridden them through the GUI.

Log file rotation Computer Product

This policy setting controls advanced log file rotation behavior. The product may create multiple logs for each user, depending on factors such as Session ID, Process ID (PID), and FabulaTech product module. Each log is stored on disk as a set of log file parts, which are created as the log is rotated. When the active log file part reaches the configured size limit, it is rotated: the current file part is renamed, and a new empty file part is created for the same log. If any of the configured limits are exceeded, the oldest log file parts are automatically removed according to the configured rules.

Maximum log file part size (per file), MB
Range: 50-1000
Specifies the maximum size, in megabytes, of a single log file part. When a log file part exceeds this value, the file is rotated and a new file part is created for the same log.
Maximum log file parts (per log)
Range: 1-99
Specifies the maximum number of log file parts allowed for each individual log. If this limit is exceeded, the oldest file part belonging to that log is removed. If set to 1, only a single log file part is kept. When the maximum file size is reached, the file part is overwritten.
Maximum log file parts (global)
Specifies the maximum total number of log file parts stored on disk across all logs and all users. If this limit is exceeded, the oldest log file parts are removed, regardless of which log they belong to. If 0, no global limit is applied; an unlimited number of log file parts is allowed.

If this policy is disabled or not configured, log file rotation behavior is controlled by the application’s internal log rotation settings.

Log level Computer Product
Log Level
Range: 0–10
This policy setting configures the log level, which determines which events are written to the log files. This setting is intended for troubleshooting purposes and is typically enabled at the request of the FabulaTech technical support team.

The following values are supported:

  • 0 - Error
  • 1 - Warning
  • 2 - Information
  • 3 - Debug
  • 4 - Dump
  • 5–10 - Reserved

If this policy is disabled or not configured, the log level is controlled by the application’s internal logging settings.
Audio device isolation mode Computer FabulaTech

This setting is common for multiple FabulaTech products, including USB for Remote Desktop, Sound for Remote Desktop, and Webcam for Remote Desktop.

This policy setting defines how redirected audio devices are isolated across user sessions in a multi-user environment. This setting is relevant when multiple users are logged on to the same server simultaneously and multiple audio devices are present.

FabulaTech isolates audio devices within user sessions so that only the owning user can access the redirected device. To provide isolation, the program relies on a dedicated FabulaTech isolation driver. If the isolation driver is disabled or uninstalled (for example, by an administrator or security software), audio isolation may be affected. As a result, an audio device may become accessible from another user session.

Important: The audio device isolation mode is determined when a user session starts. If this policy setting is changed, existing user sessions are not affected. Users must sign out and sign in again for the new isolation mode to take effect.

To address such scenarios, the following isolation modes are available:

Strict

Provides the highest level of isolation. Audio devices are isolated and accessible only to their owner.

If the isolation driver is disabled or becomes inactive, the audio device immediately becomes unavailable to all users.

Important: Native Remote Desktop audio redirection is not supported in this mode.

This mode is recommended for environments that require maximum session separation and where native audio redirection is not required.

Session-isolated (compatible)

Provides session-based isolation with a compatibility fallback. By default, audio devices are isolated and accessible only to their owner. Native Remote Desktop audio redirection is supported in this mode.

If the isolation driver is disabled or becomes inactive, the audio devices remain accessible globally (without isolation).

This mode is the only option that allows native and FabulaTech audio redirection to be used together.

No isolation

No session isolation is applied. Audio devices are accessible to all logged-on users.

This mode is not recommended for multi-user environments.

It should only be used in special scenarios, such as single-user systems where concurrent sessions are not possible.

If this policy setting is Disabled or Not Configured

The audio isolation mode is controlled by the local settings of the corresponding FabulaTech device redirection software (Sound for Remote Desktop, Webcam for Remote Desktop, or USB for Remote Desktop).

Sound for Remote Desktop Server User Manual