How to Fix Failed to play test tone error on Windows 10

How to Fix Failed to play test tone error on Windows 10
If you run into the "Failed to play test tone" error while testing your speaker or headphone, so here's how to fix. Users usually use the test tone to check the left-right balance of speakers and headphones. However, if you cannot do so, then this video is useful for you.
How To Fix Failed to play test tone error in Windows 10
FIX 1. Restart Windows Audio related services
Windows Audio
Windows Audio Endpoint Builder
FIX 2. Change the sound format
FIX 3. Disable all audio enhancements