Today I had an issue in an RDSH Farm environment, on Windows Server 2012 R2 with User Profile Disks enabled, when users trying to install Google Chrome extensions get the error “Could not install package: ‘COULD_NOT_GET_TEMP_DIRECTORY'”. This is an issue for several years already with any type of dynamic/mounted volume anywhere in the path of %temp%, %userdata% etc. What Chrome does is take the path specified in your case c:\users\%username%\appdata\local\chromeDataDir asks the os to dereference it to a canonical path which turns into something like \?\\HardDisk2\Partition1\…
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So, the release of Windows Server 2012 has removed a lot of the old Remote Desktop related configuration utilities. There is no more Remote Desktop Session Host Configuration utility that gave you access to the RDP-Tcp properties dialog that let you configure a custom certificate for the RDSH to use. In its place is a nice new consolidated GUI that is part of the overall “edit deployment properties” workflow in the new Server Manager. It turns out that much of the configuration data for RDSH is stored in the Win32_TSGeneralSetting class in WMI in the root\cimv2\…