Yo, I've got some problem with the newest office, which is that text files or worksheets created in older versions of office or even its cheaper equivalents are not working in Office, for example in Word 2016. I can't run any older file (most of the times, I keep getting an error message saying something about some damaged file) but when I use other programs/versions everything seems to be working like a charm.
Have you tried saving any file to a newer format in any other program? For example to OpenDocument.
Thanks bro, that really helped