How to change ratings in Windows Media Player?

Question

I used to rate songs in Windows Media Player simply clicking the stars near each song. Quick and easy.

For some reason, this does not work anymore in WMP on Windows 7 Ultimate x64 (RTM from MSDN). When I click on the starts, the new rating is not saved. I also tried right-clicking on the song -> Rate -> N stars, no change.

Changing the rating from Windows Explorer works. Also, disabling the "Maintain my stars ratings as global ratings in files" option has no effect.

Can anyone suggest a solution?

Answer 1

I somehow managed to get ratings working again by deleting all .wmdb files found in:

C:\Users\<USER NAME>\AppData\Local\Microsoft\Media Player

After deleting the files I had to rebuild the library, but ratings started working again.