Visual Studio 2015 FAQ
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Error 1606 with a message that references a \\psf folder
When you install Visual Studio on a Mac that’s running Parallels, this may trigger error 1606 and generate a message that references a \\psf folder. To address this issue, go to http://kb.parallels.com/en/115026 (or the older http://kb.parallels.com/en/114310), and then reinstall the “Parallels Tools” integration piece that is specific to Macs that are running Parallels.