User-821857111 posted
Is it possible for an ASP.NET web application installed on a web server to connect to an Access database stored on a local PC (which is NOT the web server)?
No.
Actually, you may be able to do it using client side javascript, or your own ActiveX control, but you would have to lower the browser's security to such a low level that it would only be advisable in a strictly controlled intranet environment, and if you
are using IE. It won't work in Firefox. You would have to know the local path of the database too.If it gets moved by the user, the "application" will stop working.
Frankly, if the database is on the user's computer, then developing a browser-based application is the wrong approach. You need an application that runs on the client machine, not in a browser.
It's possible some "helpful" soul will come along and post some code that might get you started in the direction you seem to be heading, but it would be wrong on so many levels that I would strongly advise you to rethink your approach.