1. Restart the game and try connecting external speakers to see if that helps.
2. Check your audio settings and make sure they are configured correctly. You may change the Default Sound Output Device and disable Audio Enhancements to see if it helps.
3. Update your audio drivers, as it is one of the basic steps to fix the error. The error may occur due to corrupted or missing drivers.
4. Launch the game with administrator privileges by right-clicking on the World of Warcraft.exe file and selecting Run as Administrator.
5. Verify the integrity of game files to fix errors in games that occur due to corrupted files.
6. Reset the game’s UI by renaming the Cache, Interface, and WTF folders to CacheOld, InterfaceOld, and WTFOld.
7. Reset in-game options to fix misconfigured game settings that can cause the game to crash and make its performance poor.
8. If none of these suggestions helped, check your device for hardware errors by running the Hardware and Devices Troubleshooter.
To turn the sound back on in WoW, type sndvol.exe in Run and hit Enter. This will open the Volume Mixer; here, slide the volume slider of your speakers and World of Warcraft to your desired level. We hope these suggestions help you fix the audio problem in World of Warcraft.