I've just installed Audacity 2.2.4 on my iMac OS Catalina 10.15.7. The interface i've installed is a Focusrite Scarlett 2i2 - 3rd. Gen.
The 4 boxes just under the menu bar are set to(from left to right) : Core audio - Scarlett2i2 USB - 1 (mono) recording channel - Scarlett2i2 USB
When Audacity opens I get a home page open. When i click on the Microphone icon & click start monitoring a window pops up stating: Error opening recording device. Error code 9986 Internal Port Audio error. I have clicked the ? and was not able to navigate to that error code or find a route to fix this issue. I used Audacity (relevant version of course) a lot about 6 years ago without any issues, and i'm desperate to be able to use it again, please help!
Paul Moon.
Error opening recording device
Forum rules
This forum is for Audacity on macOS 10.4 and later.
Please state which version of macOS you are using,
and the exact three-section version number of Audacity from "Audacity menu > About Audacity".
Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.
Please state which version of macOS you are using,
and the exact three-section version number of Audacity from "Audacity menu > About Audacity".
Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.
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billw58
- Forum Staff
- Posts: 5600
- Joined: Wed Aug 12, 2009 2:10 am
- Operating System: macOS 10.15 Catalina or later
Re: Error opening recording device
Try setting the recording channels to "2 (stereo) recording channels".
-- Bill
-- Bill
Re: Error opening recording device
Thanks Bill, I tried that but just the same error dialog box comes up.
Paul.
Paul.
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billw58
- Forum Staff
- Posts: 5600
- Joined: Wed Aug 12, 2009 2:10 am
- Operating System: macOS 10.15 Catalina or later
Re: Error opening recording device
Go to Apple (menu) > System Preferences > Sound > Input. Is the Scarlet listed there? If you select it and input some audio to the Scarlet, does the input level meter bounce?
-- Bill
-- Bill
Re: Error opening recording device
Thank you, yes I've now got to be able to monitor the microphone to set level, but then, when i press the Red record button nothing happens, no recording! No nothing! and no way of knowing what I may be doing wrong if anything!!! reaching the stage of trying another software 

Re: Error opening recording device
Windows guy here. Does Audacity have permission to use your microphone?Paulmoon wrote: ↑Fri Mar 05, 2021 9:08 pmThank you, yes I've now got to be able to monitor the microphone to set level, but then, when i press the Red record button nothing happens, no recording! No nothing! and no way of knowing what I may be doing wrong if anything!!! reaching the stage of trying another software![]()
See: Control access to your microphone on Mac
I hope this helps.
Re: Error opening recording device
Thanks, I've checked that, and its enabled - but i'm going around in circles. Now gone back to error opening code 9986
I'll shut down and reboot. All seems to work using Ableton lite but I don't like that programme very much.
I'll shut down and reboot. All seems to work using Ableton lite but I don't like that programme very much.