The DPI Synchronization feature ensures that the DPI setting in a remote desktop matches the client system's DPI setting.

The DPI Synchronization feature has the following requirements.

  • The client system must support Retina Display.
  • Full-resolution mode (Connection > Resolution > Full Resolution) must be selected in the remote desktop.
  • If you use multiple monitors, the Retina Display must be the primary window in system preferences. You cannot have more than one display in full-screen mode.

If DPI synchronization is disabled, display scaling is used. The Display Scaling feature scales the remote desktop appropriately.

The DPI Synchronization agent group policy setting determines whether the DPI Synchronization feature is enabled. The feature is enabled by default. With DPI Synchronization, the DPI value in the remote session changes to match the DPI value of the client machine when you connect to a remote desktop.

If the DPI Synchronization Per Connection agent group policy setting is enabled in addition to the DPI Synchronization group policy setting, DPI Synchronization is supported when you reconnect to a remote desktop. This feature is disabled by default. The DPI Synchronization Per Connection feature requires Horizon Agent 7.8 or later.

For more information about the DPI Synchronization and DPI Synchronization Per Connection group policy settings, see the Configuring Remote Desktop Features in Horizon document.

For virtual desktops, the DPI Synchronization feature is supported on the following guest operating systems:
  • 32-bit or 64-bit Windows 7
  • 32-bit or 64-bit Windows 8.x
  • 32-bit or 64-bit Windows 10
  • Windows Server 2012 R2 configured as a desktop
  • Windows Server 2016 configured as a desktop
  • Windows Server 2019 configured as a desktop
For published desktops, the DPI Synchronization feature is supported on the following RDS hosts:
  • Windows Server 2012 R2
  • Windows Server 2016
  • Windows Server 2019
For virtual desktops, the DPI Synchronization Per Connection feature is supported on the following guest operating systems:
  • Windows 10 version 1607 and later
  • Windows Server 2016 and later configured as a desktop

The DPI Synchronization Per Connection feature is not supported for published applications.

Following are tips for using the DPI Synchronization feature.

  • If you change the DPI setting on the client system, but the DPI setting does not change in the remote desktop, you might need to log out and log in again to make Horizon Client aware of the new DPI setting on the client system.
  • If you start a remote session on a client system that has a DPI setting of more than 100 percent, and then use the same session on another client system that has a different DPI setting of more than 100 percent, you might need to log out and log back in to the remote session on the second client system to make DPI synchronization work on the second client system.
  • If you connect to an active remote session in full-resolution mode, Horizon Client scales the resolution to be similar to when DPI Synchronization is enabled, but icons are not as clear. If you switch from normal to full-resolution mode in an active remote session, Horizon Client prompts you to log off from the remote session for the resolution change to take effect.
  • If you use a non-Retina Display computer when you start a remote session, and then use a Retina Display computer to connect to the same session, the remote session cannot change to the new DPI setting until after you log off.
  • If a Horizon administrator changes the DPI Synchronization group policy setting value for Horizon Agent, you must log out and log in again to make the new setting take effect.