- Update to version 21.4.0.11
  + App protection support on Red Hat Package Manager (RPM)
    experimental feature
    - App protection is now supported on the RPM version of Citrix
      Workspace app.
    - For more information, see App protection.
  + Microsoft Teams Optimization
    - With this release, the echo cancellation feature is disabled
      by default. We recommend that you not use your built-in
      speakers and microphone for calls. Use headphones instead.
    - This fix aims to address choppy audio issues noticed on thin
      clients.
  + Service continuity (Technical Preview)
    - This feature is in Technical Preview. Citrix recommends using
      this feature only in non-production environments. To sign up,
      use the following Podio form: Sign up: Service continuity
      Tech Preview for Citrix Workspace.
    - Service continuity removes or minimizes the dependency on the
      availability of components that are involved in the
      connection process. Users can launch their virtual apps and
      desktops regardless of the health status of the cloud
      services.
    - For more information, see Service continuity section in the
      Citrix Workspace documentation.
- What’s new in 2103
  + Pinning multi-monitor screen layout
    - With this release, you can save the selection for
      multi-monitor screen layout. The layout is how a desktop
      session is displayed. Pinning helps to relaunch a session
      with the selected layout, resulting in an optimized user
      experience.
    - As a prerequisite, you must enable this feature in the
      AuthManConfig.xml file. Navigate to
      $ICAROOT/config/AuthManConfig.xml and add the following
      entries to enable the pinning screen layout feature:
        <key>ScreenPinEnabled</key>
        <value> true </value>
    - Only after adding the key above, you can see the Screen
      Layout option in the App indicator.
    - This feature is not available on the web launch of Citrix
      Workspace app.
    - For more information, see Pinning multi-monitor screen
      layout.
  + Increase in the number of supported virtual channels
    - In earlier versions of the client, sessions supported up to
      32 virtual channels.
    - With this release, you can use up to 64 virtual channels in a
      session.
  + Microsoft Teams enhancements
    - The VP9 video codec is now disabled by default.

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