Note: This will delete all media content and ratings too.Next scroll down and right click the Windows Media folder | select Delete.Type: %localappdata%\Microsoft | then click OK (or press the Enter key).Next press Winkey + R to open the Run Dialog.Locate Windows Media Player Network Sharing Service | if it was running then:.Click 'name' column to reverse its alphabetical order.
If I intended on doing that myself this is the process I'd take:
Could you confirm how you tried to erase corrupted libraries?