A family of Microsoft relational database management systems designed for ease of use.
I would suggest you drop the AutoExec, and make a “simple” tiny form that has no controls etc. and specify that form as start-up. That form can then run the same macro code, or some VBA code, and then when done can launch the start-up form.
So you don’t necessary require an AutoExec macro, and you can/could use a “dummy” form for this purpose.
Regards,
Albert D. Kallal (Access MVP, 2003-2017)
Edmonton, Alberta Canada