Windows 10 Audacity Internal PortAudio error / no devices

I just installed Audacity 2.1.2 on my Windows 10 laptop and when it starts I get the error message: Internal PortAudio error / no devices. What do I need to do so that Audacity will recognize my audio devices? My laptop is an Acer Aspire 5820T-6401 that came with Windows 7 and was upgraded ~6 months ago to Windows 10. I have not tried any corrections yet, but my audio devices work with other software: Windows Media Player, VLC Media Player, Skype, etc.

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