Windows 10 Build 16299 is the final version of Fall Creators Update. A new Microsoft Update KB4046355 for this build seems to remove Windows Media Player. KB4046355 shows up as “FeatureOnDemandMediaPlayer” in the Windows Updates listing.
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Installing KB4046355 update clears the Program Files\Windows Media Player folder, leaving out only the wmp.dll file. The context menu entries in File Explorer are removed as well.
Microsoft hasn’t provided any information about this update, but it’s possible that Microsoft is removing Windows Media Player (making it an on-demand app) intentionally in order to promote other media apps from the Store.
If you need Windows Media Player in Windows 10 Fall Creators Update, here is how to reinstall it:
1. Open Settings (WinKey + i)
2. Click Apps.
3. Under Apps & features, on the right-side, click Manage optional features.
4. Select “Windows Media Player” optional feature and install it.
You should also be able to install it via Optional Features classic UI.
Press WinKey + R to bring up the Run dialog. And then type:
Under “Media Features”, enable the checkbox for “Windows Media Player”
That’s it! You’ve now installed Windows Media Player in your Windows 10 Fall Creators Update system.
Note: For Windows KN and N Editions, you’ll need to download Media Features Pack in order to obtain Windows Media Player. For more information, see post Where is Windows Media Player in Windows 10?
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Ramesh Srinivasan founded Winhelponline.com back in 2005. He is passionate about Microsoft technologies and has a vast experience in Windows — delivering support for Microsoft's consumer products. He has been a Microsoft MVP (2003-2012) who contributes to various Windows support forums.