Since Microsoft did a major overhaul of Office for its 2007 release, document corruptions doesn’t happen anywhere near as often or as much as it used to.
(Now there’s a blessing.)
But, it will still creep in and get you at the most inopportune time and, as Murphy’s Law dictates, right when you absolutely, categorically, cannot afford to waste the time fixing it.
What Causes Document Corruption?
I wish it was easy to nail down, but it’s a little more complex and, unfortunately, a little more “woo-woo”/out there than anyone would care to admit.
Having said that, here’s a link to an article where you can find out a little more:
Click here to learn more about avoiding Word document corruption