A family of Microsoft word processing software products for creating web, email, and print documents.
That's certainly an odd error message to get when you're trying to save a file as opposed to opening it. I'll see what my Microsoft sources know about this, but I'll warn you that bugs in Word 2007 (Word 12) are fairly low-priority when they're at work on designing Word 16.
It may be odd, but as I said it is very common. Here are just a few of the many threads complaining about this; unfortunately the answers don't really seem to solve the problem:
Jul 2, 2010 - Save as PDF/XPS plug-in cannot make a PDF/A file ... titled "Microsoft Word" and the body of the window says "This file could not be found.".
Why **can**'t I **save** my Word 07 docs as **PDF files** anymore
Sep 1, 2012
**Save As PDF** Problem with **PDF**/A Setting Checked.
Nov 30, 2011
**Can**'t **save** word docs as a **PDF**
Jan 27, 2011
**Save as pdf** in Office 2010 **pdf file will not** display
Aug 27, 2010
https://forum.winehq.org/viewtopic.php?f=8&t=19850
Sep 24, 2013 - 6 posts - 2 authors
I tried out the "save as PDF" function in Word 2010, and it did ... got a popup error message "This file could not be found" and the save failed
answers.microsoft.com/.../save-as-pdfxps...cannot...pdfa-file/7681454d-...
(You made a comment on this one.)