I have a set of mdf and ldf files given to me by a client. I open sql server express management studio and try to attach the mdf files as a database. I recieve an error "Unable to open physical file blah\blah\blah operating system error 5: (access is denied) (Microsoft SQL Error: 5120)
The file is not open in any other program, and all permissions are applied to the file.
Why would this be happening, how to fix?