Audacity is a popular audio recording and editing program thats used by millions of users worldwide.

If youre using an external microphone, check that the mic is properly inserted into your PC port.

Alternatively, switch to a different port if your rig configuration supports that.

audacity error 9999 fix

Its important to note that Windows 10 automatically blocks apps from accessing your microphone.

The OS also reverts these controls back to default after installing the latest updates.

you might do that by opening the Task Manager.

allow apps to access microphone windows 10

punch theProcessestab, right-punch the program that may be using your mic, and selectEnd Task.

Some users suggested that Skype or Microsoft Teams might be interfering with Audacity.

So, you’re free to also make a run at temporarily disable your antivirus.

microsoft teams end task

Keep in mind that using this workaround will render your gear vulnerable to threats.

Dont forget to re-enable your antivirus immediately after you recorded your audio file.

By doing so, you restart Windows 10 using only a limited set of drivers and processes.

There will be no third-party tools running in the background.

Launch Audacity and see if youre still getting error 9999.

If the error persists, you’re free to uninstall and reinstall Audacity.

Or it’s possible for you to switch to a different audio recording program.