I deleted the localdb instance files which were located in
"C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0"
by accident. The system cannot start the localdb instance now. The way that I know how to fix the issue is to delete the instance by command
"sqllocaldb delete instancename"
, and re-create the instance again. But I found this approach could only work for user account if I deleted the instances files located in
"C:\Users\UserName\AppData\Local\Microsoft\Microsoft SQL Server Local DB\Instances\v11.0"
So how can I solve this problem to delete the db instance owned by System?