How to recreate media library database manually on Windows Server 2012 R2 essentials

Run Powershell as Administarator and run this scripts.

set-wssmediaserverenabled -enable 0
net stop WMPNetworkSvc
del "C:\Users\MediaAdmin$\AppData\Local\Microsoft\Media Player\CurrentDatabase_400.wmdb"
net start WMPNetworkSvc
set-wssmediaserverenabled -enable 1