Blank page is printed with different even and odd headers

If a Microsoft Word document contains different odd and even headers and footers and an odd page that is followed by a section break or page break that is followed by page numbering starting over at 1, a blank page is printed between the two pages where an even page is expected.

Different odd and even headers and footers are often used for documents that will be bound as a book. An open book has even pages on the left side and odd pages on the right side. The blank page acts as a placeholder, so that the odd pages do not switch to the left side.

Blank page printing is by design and is necessary for book binding.