Microsoft Edge is the new, default web browser for Windows 10. While Microsoft Edge is not currently compatible with Blackbaud's Hosting websites yet, our engineers have been in the process of testing with it. That being said, you can still keep Windows 10 and not have Windows Edge as the default browser. it’s currently possible to reactivate Internet Explorer 11 instead, so you can make that your default browser and still continue using Windows 10.
To find Internet Explorer:
In the Windows 10 taskbar search, type Internet Explorer and it will appear in the results.
To make it the default browser:
1.Go to Start > Settings > System.
2.Choose Default apps, then scroll down to Web browser.
3.Tap or click the browser that’s currently listed as your default, then choose Internet Explorer from the list of apps.