Hi, Eva Manicom
This sounds less like a true margin problem and more like Word’s preview/print settings getting stuck. When Word starts treating the page like a scaled object, the preview can show a big white border and the printout can come out shrunken or split oddly.
Here are some suggestions you can try:
If the extra white area is only in preview, turn Show White Space between Pages in Print Layout View back on, or double-click the gray gap between pages. That often fixes a suddenly “wrong-looking” page without changing the document itself.
In File > Options > Advanced > Print, clear Scale content for A4 or 8.5" x 11" paper sizes. Also check the Print screen and make sure it is not set to a scaled or multi-page print mode.
It is suggested that you disable any third-party Word add-ins and test again, since add-ins can interfere with print layout.
If this only happens in one document, create a new blank file and copy the content into it. If it happens in all documents, resetting Normal.dotm is worth trying because a damaged template can break print preview across Word.
Thank you for your patience in reading, I hope this information has been helpful to you.
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