After the installation is finished, restart your PC.
If you haven't installed Windows Media Player on your Windows 10 PC, the player will be installed now. On the Windows Features screen, press the + icon next to the Media Features, then select the checkbox next to Windows Media Player.Press Win+R, click RUN, type optional features in the command box.If you can't find Windows Media Player on Windows 10, you can use the following steps to enable Windows Media Player on Windows 10: Note: DVD playback feature isn't included in Windows Media Player 12 on Windows 10, you can manually add DVD playback to Windows 10 or use third-party DVD player like 5KPlayer to play DVDs freely including region-coded DVDs. To enable Windows Media Player on Windows 10, click the Start Menu, and select Settings > Apps > Apps & Features > Manage optional features > Add a feature > Windows Media Player > Install. On Windows 10: Users don't need to download Windows Media Player 12 which is an optional feature on Windows 10.
How to Download and Install Windows Media Player on Windows 10/11?