Access has no idea of what you are talking about ... it is not a variable, built-in function or constant.
Microsoft Access
Microsoft Access is a rapid application development (RAD) relational database tool. Access can be used for both desktop and web-based applications, and uses VBA (Visual Basic for Applications) as its coding language.
intReply = MsgBox("Your document is in My Documents with the name " & strFileName & vbCrLf & " Do you want to open it now?", vbOKCancel)