Caution Be sure to save a copy of your original Access database. You can't modify the design of forms, reports, or modules in an Access database saved as an MDE file. If you need to change the design of these objects, you must do so in the original Access database and then re-save the Access database as an MDE file. You also won't be able to run or convert an Access database saved as an MDE file in future versions of Microsoft Access. You will only be able to open or convert the original Access database.