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.

Microsoft Edge users on Windows will soon see Adobe branding in all PDFs, unless you subscribe to Adobe's advanced features.

The Adobe Acrobat PDF engine will replace Edge’s current PDF reader over the course of the next two years. This will, according to Adobe, result in improved performance, higher fidelity ...

Private Edge users have long since switched to the Adobe inline reader. From September, it will also become an opt-out for business customers.