Press Ctrl+End to go to the last page
Turn on Show/Hide formatting marks with Ctrl+Shift+8
Delete extra paragraph marks on the blank page
Delete any page breaks or section breaks on the blank page
If the blank page is after a table, reduce the final paragraph mark to 1 pt font size
Open the Navigation Pane and delete the blank page if needed
Check for hidden content or extra spacing at the end of the document
Save the document and confirm the blank page is gone