Printer scan to pc not working, pc does not recognize file type

Use to be able to scan documents from my printers HP Envy 7640 and Epson XP-800 to my PC but for some reason it no longer working.  When I try to open on PC it says file corrupt or doesn't recognize file type.  When I try to resolve it seems that I'm being directed to purchase an expensive monthy Adobe package that I don't think I need.  I'm a simple retiree trying to scan a document to my pc and be able to view it and send it to someone else.  Any advice?