(A) For Chrome
1. Click on lock icon on the address bar of your browser. You will see a pop-up where you can configure the desktop notifications between Allow of Block.
(B) For FireFox
1. Click on lock icon on the address bar of your browser. A pop up will open. Click on gear icon next to Permissions.
2. It will open Permissions section on in your FireFox browser. Click on Settings button next to Notifications.
3. It will open Settings window where you can configure to allow or block the notifications.
Note: Desktop notifications are not supported for Internet Explorer and Edge browser.