Access 2016 won't bring up front end

[EScottHug]

I've been developing code in one .accdb, and the database tables in a back end file for a couple of months now. Suddenly, Access 2016 will not bring up my front end .accdb. It just returns to the Open dialog. None of the backed up front end/back end combos work now as well. I can bring up any back end just fine.

I've seen this problem when moving the front end/back end to another machine and thought it was to do with permissions/paths. My solution then as it will be here will be to create a new front end and import everything into it. That's gotta be easier than attempting to run Linked Table Manager in a Macro or VBA. It would appear that Access has a problem accessing the back end, but provides no other way to run Linked Table Manager. It is rude to exit without a peep you guys.

But any ideas as to what is happening here? Should I be developing in the merged front end/back end and separate them for production?

[Perceptus]

You may need to open the database exclusively bypassing the startup.

The linked table manager is pretty painless imo. On average 5 clicks to relink all tables to the new databackend.

I develop with back and front ends in same. After that split, to keep user downtime low. But really the complexity of the split backend shouldnt limit you.