We are using MS Word 2016 via Office 365 on a Windows 8.1 machine.
We originally experienced this problem several months ago. It disappeared after a few months, but, it has now reared its ugly head once more.
When we attempt to save a newly created Word document for the first time strange things happen. As soon as we hit <CTRL S> (or any other method to save) the original document disappears. In its place Word creates several new pages, all blank. That's it. Can't get the original back and can't sleep at night.
Any ideas are much appreciated. If anything works I will report back to the forum. If not, it will just be me, that computer, and a baseball bat!