Could not obtain exclusive lock on database 'model' - who is using it?

when trying to run the following query in order to create a new database: CREATE DATABASE [Lunch] CONTAINMENT = NONE ON PRIMARY ( NAME = N'Lunch', FILENAME = N'E:\Data Files\Lunch.mdf' , SIZE = 110592KB , FILEGROWTH = 1048576KB ), FILEGROUP [DATA] ( NAME = N'Lunch_Data', FILENAME = N'E:\Data Files\Lunch_Data.ndf' , SIZE = 110592KB , FILEGROWTH = 1048576KB ), FILEGROUP [NONCLUSTERED_INDEXES] ( NAME = N'Lunch_nonclusteredindexes', FILENAME = N'E:\Data Files\Lunch_nonclusteredindexes.ndf' , SIZE = 110592KB , FILEGROWTH = 1048576KB ) LOG ON ( NAME = N'Lunch_log', FILENAME = N'F:\logFiles\Lunch_log.ldf' , SIZE = 524288KB , FILEGROWTH = 524288KB ) GO Getting the following error message: > Msg 1807, Level 16, State 3, Line 1 > > Could not obtain exclusive lock on database 'model'. > > Retry the operation later. > > Msg 1802, Level 16, State 4, Line 1 > > CREATE DATABASE failed. > > Some file names listed could not be created. Check related errors. what is using the model database and does not allow me to obtain the exclusive lock?