Export to PDF error in Word 2016: "Export failed due to an unexpected error"
ISSUE
You may get this error when you try to export to PDF in Word 2016: "Export failed due to an unexpected error."
This can occur when the Table of Contents page has a different orientation than the content.
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In your Word document, go to File > Print and choose the Microsoft Print to PDF option.
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Upload your document to OneDrive, open it in Word Online and then click on File > Save As > Download as PDF.