I have just installed Audacity 2.3.0 and am running Windows 10 Home. When I try to record I get “Error opening recording device” and I see that Audacity shows no recording devices - I’m guessing that the latter is what’s causing the error message. I’ve tried re-installing the software to no avail.
See this FAQ page in the Audacity Manual: https://manual.audacityteam.org/man/error_opening_sound_device.html
particularly the Windows 10 section at the top.
WC