Error Message 9999

Using Windows 10 and Audacity

I have used Audacity for a long time never had any problems, but now have the following error message. anyone any ideas?

Error opening recording device.
Error Code:-9999 Unanticipated host error


Yes, I have 57 ideas. They are enumerated here:

Click on any one of them for additional information.

I hope this helps. :smiley: