I cleared Temp folder completely, and tried "winword.exe /a" a few times, but I still get the print error... so not an AddIn error.

So that leaves 2 possible solutions:
-if all my docs are "corrupt" as you say, is there some way to mass-correct them?
-maybe my margins are too narrow (or paragraphs too wide). Is there some benchmark rules for min margin or max paragraph width in MS Word 2013?

... I mean MS Word 2010

If the error only occurs when printing, but not when editing, then a corrupt/faulty print driver could be the culprit.

Corrupt documents can often be 'repaired' by inserting a new, empty, paragraph at the very end, copying everything except that new paragraph to a new document based on a known good template (headers & footers may need to be copied separately), closing the old document and saving the new one over it.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]

Hi all
I gave up with Office 2010, and bought Office 2019 and there is no problem for some some weeks. I also bought new PC, but both Windows 10 Home and both 8GB RAM.
Thanks, Sid