Step 4: Click the Run button next to Windows Media Player. Step 2: Choose System from the left sidebar and Troubleshoot from the right pane. Step 1: Press the Windows + I keyboard shortcut to open the Settings app. Fortunately, you can eliminate most of its issues, including the one at hand, using the Windows Media Player troubleshooter. Windows Media Player is a new application, so it is common to encounter issues. Use the Windows Media Player Troubleshooter If it isn’t, change the file type to a compatible format. To check for that possibility, check the Windows Media Player file compatibility list and ensure your file is compatible. The possibility is high that the Media Player doesn’t support the media file you are trying to play. Unfortunately, it doesn’t support all of them. The latest Windows Media Player is built to work with all the popular audio and video formats. We’ll show how to fix Windows Media Player not working in Windows 11. If Windows Media Player is not working properly, then you have come to the right place. The Media Player might fail to play certain files or sometimes not work. However, like most Windows apps, it has its share of flaws. Windows 11 introduced a new Media Player that you can use to play video and audio, replacing Groove entirely for the latter.