Microsoft SQL Server - MDF/Database Attach - Access is denied Error 5120 5123

There are some possible error messages Attach database failed for Server ... (Microsoft.SqlServer.Smo) An excepcion occured while executiong a Transact-SQL statement or batch. Unable to open physical file ... Operating system error 5: 5(Access is denied). (Microosft SQL Server, Error: 5120) CREATE FILE ecnountered operation system error 5(Access is denied.) while attempting to open or create the physical file ... (Microsoft SQL Server, Error: 5123) Msg 5120, Level 16, State 101, Line 3 Unable to open the physical file ... Operating system error 5: "5(Access is denied.)".