I believe you have eliminated the space between pages in the view, that's all; it's an easy mistake to make. Move your cursor over the top of the page till it turns to a double arrow in a white box and double-click.

By the way, headings and headers are not the same. The header and footer are special areas of the document; headings are paragraphs introducing or highlighting new material, as in headlines, subheads, etc.

I googled the problem earlier and found that solution. It didn't work. Nor did checking the "show white space" box in options. I also tried double clicking in the header or footer, still nothing visible except when in print preview or full screen reading.

Only paragraphs with an "Outline level" other than "Body Text" (Paragraph dialog box) will show up in the Navigation pane. The easiest way to format heading text in your document is to apply the built-in heading styles, called Heading 1, Heading 2, etc. in English versions of Word.

Note that if you apply a heading style to a header (or footer) paragraph, it won't show up in the Navigation pane.

In general, when text doesn't show up in the document but you can see it in Print Preview, the text may be formatted as hidden (Font dialog box) and you have the option to print hidden text selected at File tab | Options | Display.

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Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional