A family of Microsoft relational database management systems designed for ease of use.
It's extremely unlike that you actually need utility.mda (IIRC, that was from back in the Access 95 days!)
Hold down the shift key while you're opening the database, then go into the VB Editor. Choose Tools | References from the menu bar. You should find a checked reference to Utility.mda near the top of the list: uncheck it. Once you've done that, select the Compile application on the Debug menu (first choice). If the application compiles, then you should be fine without it.