There are two levels of diagnostic data: Required and Optional. Note: Diagnostic data may contain "personal data" as defined by Article 4 of the European GDPR, but it doesn't contain your name, your email address, or any content from your files.
Before you send an Outlook email message or share a Word document, Excelspreadsheet, PowerPoint presentation, or OneNote notebook, run the Accessibility Checker to make your content easier for people to read and edit.