Clear, Reset, Delete Windows Media Library WMDB Files
WMDB is the Windows Media Library database file that keeps indexes, location of all the music and video files on the computer. If there is a problem with it, i.e., corruption, it will not discover new files. In that case, it would be wise to reset or delete and then recreate the database.
There can be multiple WMDB files, and they all have different purposes. Make sure to delete all of them. Now open the Windows Media Player, and it should start indexing your library again. You can manually add your music folders using the library feature. Once done, check if the indexing has started.
Windows Media Player is not the favorite kind of media player in Windows, but it is definitely available right away. The other built-in media player, Groove, is not worth it as it doesn’t have most features. I hope you were able to delete or reset the Windows Media Library WMDB Files. It is the fool-proof fix if you have indexing issues as Windows Media Player doesn’t offer any straight forward option to reset the index.