A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi Darrell - Windows 10 puts you in control of which of your apps act as the default for file types, so we don't automatically take over the association (I guess you could imagine how much we'd upset a confirmed OpenOffice user if we did :-))
Easiest way to fix this:
Press the Windows key/select the Windows Icon in the start bar
Type "Default" - and search should then suggest: "Default Programs", select it
Wait for the applet to start and then select the "Set your default programs" choice
Find Excel 2016 in the list, select it, and then select "->Set this program as default"
Then sit back and enjoy Excel opening your workbook files!
Apologies for the somewhat long set of instructions, I feel we should award some kind of "dedication above and beyond the expected calls of duty" :-)
Hope this helps...pc