Administrator Guide

If the Optimized mode icon is not displayed, the Virtualization Pack is running in Fallback mode. This is because of the version
mismatch between the Horizon Client on the thin client and the Horizon Agent on virtual desktop.
For information about compatibility of Horizon Virtualization Pack for SFB components, see the Horizon Client 4.8 or later and
Agent 7.5 or later Virtualization Pack for Skype for Business is not compatible with older Client and Agent releases article at
kb.vmware.com.
Change Optimized mode to Fallback mode
To change the Optimized mode to Fallback mode, or to disable the Virtualization pack for Skype for Business on the Horizon
desktop, do the following:
1. On the VMware Horizon desktop, open the Windows Registry Editor.
2. Rename the registry keys based on the following deployment scenarios:
Table 22. Registry keys
Deployment scenario Registry key
View Desktops (64-bit) with Skype for Business (64-bit) Rename HKLM/Software/Microsoft/Office/Lync/
VdiMediaProvider to HKLM/Software/Microsoft/
Office/Lync/VdiMediaProviderDisabled.
View Desktops (64-bit) with Skype for Business (32-bit) Rename HKLM/Software/Wow6432Node/
Microsoft/Office/Lync/VdiMediaProvider
to HKLM/Software/Wow6432Node/Microsoft/
Office/Lync/VdiMediaProviderDisabled.
View Desktops (32-bit) with Skype for Business (32-bit) Rename HKLM/Software/Microsoft/Office/Lync/
VdiMediaProvider to HKLM/Software/Microsoft/
Office/Lync/VdiMediaProviderDisabled.
3. Close the Windows Registry Editor.
4. Restart Skype for Business.
Skype for Business is set to Fallback mode, and Real-Time Audio-Video (RTAV) is used for SFB calls.
Using multi-monitors in PCoIP session
This section is applicable to Wyse 5070 thin client. ThinOS supports multiple-monitor display to run virtual machines on each
monitor.
User scenario:
1. Connect multiple monitors to the ThinOS device.
2. In the Display Setup dialog box, disable Mirror Mode, and configure the display layout.
3. Launch a full screen PCoIP session.
● Display numbers—A virtual machine needs sufficient video memory to support three or four monitors. The default video
memory on VMware vSphere supports only two monitors.
○ Supports one session up to four monitors in span mode with resolution up to 2560 x 1600.
○ Supports one session up to two monitors in span mode with resolution up to 3840 x 2160.
The maximum number of monitors that can be stacked vertically is two. If you use more than two monitors, the monitors
must be in the same mode and have the same screen resolution. For instance, if you use three monitors, all three monitors
must be either in portrait mode or landscape mode, and must use the same screen resolution.
● Display layout—The display layout of the monitors must be aligned up and down, or left and right. Improper alignment
results in unusual display.
● 3D rendering—You can configure 3D graphics rendering for connected desktops. To use the 3D rendering feature, use up
to two monitors with resolution up to 1920 x 1200.
Table 23. Matrix for multi screen support
Configuring the connection brokers 133