There is no native app to view CDR files on Windows 10. However, ... In it, you can import a CDR file using the Open button, and then you will able to view the design.

How to Open CorelDraw Files. ... Click the icon in the upper left corner of the window to browse to the location of your CorelDraw file. Double-click the file to open it in CDR Viewer.

If you have CDR files that you want to use in Illustrator, you would need to open them in CorelDraw and then convert it to AI format. The Ai format will then be able to open in Illustrator.