Make sure your microphone is activated and coloured in the top left-hand section of your screen. Also, if applicable, make sure the “mute” switch on your headset is not activated. The volume of your microphone may also simply be too low. Adjust it by clicking on the arrow to the right of your microphone’s activation icon.
The wrong device may also have been selected. Using the white arrow beside the microphone, select another microphone from the list of devices on your screen.
Also, make sure to allow Adobe Flash Player to use your devices. Right-click in the middle of your screen in the Via activity -> Settings -> Confidentiality. Make sure the “Allow” option is selected. You can also check the “Remember” box to avoid having to allow access at a later time.
If you are using Google Chrome, make sure that no bar appears on top of your browser also requesting you to allow Via access to the camera and/or microphone. If such bar appears, click on “Allow”.