No Sound in RealVNC Viewer - Troubleshooting Audio

How to fix VNC Viewer audio greyed out

Solution 1. Checking Windows system settings

When the VNC Viewer audio is greyed out, you can first check the Windows system settings to see if there is a problem with the settings.

Step 1. Open “Settings” in the “Start” menu.

Step 2. In Settings, open “System” Options.

Step 3. Find “Sound” and then under “Related Settings” on the right, select “Sound Control Panel”.

Step 4. Find the “Playback” tab in the Sound Control Panel and make sure that the audio output device you are talking to is set to default by clicking “Set Defaults”.

Solution 2. Selecting output devices from Windows settings

Windows allows you to assign audio output devices to specific applications. You can check to fix the VNC Viewer audio greyed out problem by selecting the sound output device.

Step 1. Open “Settings” in the “Start” menu.

Step 2. Find “System” in Settings and turn it on.

Step 3. Navigate to “Sound” and open “App volume and device preferences” on the right.

Step 4. Expand the VNC Viewer Output Devices drop-down list, then select "Speakers" from the list and make sure your computer's volume is loud enough.

Solution 3. Restart VNC server

When the VNC Viewer audio greyed out, it may be because the VNC Server is not running properly. Make sure the VNC Server on the remote computer is running and you can restart it to fix the problem.

Step 1. Press “Win+R”at the same time and type in “services.msc” and click “OK”.

Step 2. Scroll down to find VNC service and right-click “VNC Server” > “Restart”.

Solution 4. Reinstall VNC Viewer

If none of the above works, then try reinstalling VNC Viewer.

Step 1. Open "Control Panel”> “Uninstall a program” and right-click “VNC Server”> “Uninstall”.

Step 2. Go to the VNC website to re-download and install it.