Simply click on lock icon located at the bottom of the pane, then enter your admin password. Note: If you can’t click on the “Allow” button, you need to unlock the pane. Then click on the “Allow” button next to the alert message.Click “Security & Privacy” and then you will see the alert message “System software from developer “Apowersoft Limited” was blocked.Click the “System Preferences” icon in the Dock or choose Apple menu > “System Preferences”.

Please refer to the guide below to install the virtual audio cable:

If the installer does not pop up, or if the installation fails, it is likely that the process has been blocked, so you cannot cast the sound.

Click “Install now” and follow the steps to install.

You will see the error message “The virtual audio cable was not detected when casting sound, do you want to install it now?”

In case that you may face the issue of failing to install Apowersoft virtual audio cable when using ApowerMirror (Mac version), here we post some solutions to solve this problem.Īpple has a new security mechanism in macOS 10.15 and later systems which will automatically prevent users from installing software that is not downloaded from the App Store unless the user manually changes to “Allow” in “System Preferences”.

Set up virtual audio cable