Hello. Could you let me know if you have a newer version of Office installed—such as Office 365 or Access 2016 or later, alongside Access 2010?
One possible approach is to set Access 2010 as the default program for Access files, open your database directly from within Access 2010, and add your folder as a Trusted Location in Access 2010.
These three methods may help, but their effectiveness depends on whether something is forcing the newer version to open your files, and how that’s happening (could you clarify what exactly is triggering the update or version switch?).