Default apps > Web browser
Symptom:
1. Make Chrome your default browser option when launching Chrome doesn't work anymore for Windows 10.
2. Even you click OK, Microsoft Edge will still be the default browser.
Solution:
1. Click Windows Start button on bottom left of screen.
2. Click "Settings".
3. Click "System, Display, notifications, apps, power".
4. Click "Default apps".
5. Click "Web browser".
6. In Choose an app, select your desired web browser.
This works fine for FireFox and other web browsers too.