Error code: -9999 Unanticipated host error

Hi there,

Audacity 2.4.2 on Window 10 1803 and confirmed same issue on Windows 10 2004

I’ve enabled microphone access in Privacy settings as per the sticky but get ‘Error code: -9999 Unanticipated host error’ when i hit record.

Microphone works in other applications on the same device

Mic is enabled in Control Panel / sound

Sample rate is set to 44100

Any suggestions appreciated


Stereo/Mono has to match, too.

What is the microphone and how is it connected?


Are you using cloud storage anywhere in your system?

Audacity is not a fan of cloud drives and internet storage.


It’s an MPOW HC6 USB headset, and though it is two-channel I get the above error whether it is stereo or mono.

All local storage.

Thanks - keep the suggestions coming!

Download the “Audio Device Info” to your computer (
Then upload the saved file with your reply (

Hi there

Many Thanks - should be attached
audacity_device_info.txt (7.9 KB)