Use code to see if an online workbook is newer than local version

Hello,

I want to make a 2010 Excel file available for download from a website - call it "file.xslx" (it will contain some data used in calculations). I plan on updating the data in the file on a routine basis. I'd like to be able to automate a process where, when the previously downloaded file was opened, a macro or sub would somehow get a value from a cell in the newer online version, compare it to a value (in a hidden cell) in the downloaded version, and trigger a message to the user saying, "there's a newer version available online".

Would someone please tell me if that's possible and how to do it? I was thinking it might be doable with an ADO connection, but I'm just not sure.

Thanks,
Jeff

Thank you for your reply, Marvin.

I actually have a one-drive account. But that doesn't work for my purposes. Is there a code approach you'd recommend?