If you want to convert Outlook MSG files to PDF documents on your Windows PC, use these free MSG to PDF converter software and online tools.

The Microsoft Edge browser is the default app for PDF files on Windows PCs. However, you can easily change your default PDF viewer to Adobe’s Acrobat Reader DC for files saved to your Windows PC.

You can convert Apple's HEIC files to PDF on a Mac or Windows computer using the free Convertio website.

To change the default PDF viewer on Windows 10, you'll need to edit your default apps in the Control Panel.