I just posted how this didnt work for me.....after doing pretty much everything posted here twice.
I even installed the NAPS2 software --which worked immediately by the way but doesnt do feeder scans....so I kept trying.
Another restart and --- magically --- the Brother software works now for scanning and printing.
Brother (after much time on the chat line with them) claims it is a MS issue.....I fail to see that, since NAPS2 works fine immediately.
But anyways, not sure why this worked.....or how.......I was just about to order a new printer/scanner but didnt because honestly the Brother MFC J875DW is the best printer/scanner I have ever had...ink is not horrible expensive, doesnt guzzle ink, prints DVDs, etc etc...it does occiasionally double feed paper when printing.....but.....
I am glad I happened across this page.......never would have thought "multiple restarts" would magically heal anything.....I dont know which of the other steps I took helped...or if all of them did....or none. LOL
And, oddly, there is STILL no "scanner" showing up in my devices-->printers/scanners page