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If you plan to deploy instant clones, you can use this procedure to create a parent virtual machine for an instant-clone desktop pool. To upgrade the agent software on a Linux virtual machine, see the separate document, Setting Up Horizon 7 for Linux Desktops. To upgrade the agent software on a Terminal Services host or Microsoft RDS host, see Upgrade RDS Hosts That Provide Session-Based Desktops. To complete some of these tasks, you might need the step-by-step instructions found in the vSphere Client online help or in Setting Up Virtual Desktops in Horizon 7, available by clicking the Help button in Horizon Administrator. This procedure provides an overview of the tasks you must perform to upgrade the agent software in virtual machines used as desktop sources. Alternatively, you can perform a fresh installation of Windows 8.1 and then install Horizon Agent, upgrade the operating system from Windows 8 to Windows 8.1, and then reinstall Note: To upgrade the operating system in a virtual machine desktop from Windows 8 to Windows 8.1, you must uninstall
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