Thank you for your response
I've same entries as you proposed.
By the way I copied .sdf database into App_Data
Commentet out in Global.asa
This is my Connectionstring in web.config
At this time I'm running into another exeption:
model backing the 'MusicStoreEntities' context has changed since the database was created. Consider using Code First Migrations to update the database
Whats going wrong ?