Looking for some help. My document's vertical line spacing is different when opened on my two computers even though every setting I can find is identical (including printer).

I have printed a page to "Microsoft print to PDF." Everything is identical except that the space between lines of text is slightly larger when opened on my desktop. Page was printed on the same printer.

This is the very same file opened on each of the two computer which I have edited on both computers many times in the past. Now, suddenly, they display differently. The 246 page document (as previously published) is now 294 pages when opened on my desktop.

I have verified the following on both computers:
1. All font settings are identical, including advanced.
2. All paragraph settings are identical, including advanced.
3. The versions of Word are identical.
4. The printer settings are identical.
5. All margins and layout settings are identical including gutter.
6. Every line of text and every blank line are identical.
7. Both machines are Windows 10.
8. Fonts are all installed and have been fine during past edits on both machines.

Any help will be greatly appreciated. Thanks in advance.