Disable Windows Explorer ads
Notifications in Windows Explorer can show ads promoting premium Microsoft services. If you don’t like to see these ads and notifications, you disable them safely from inside Windows settings:
Open the View tab from Explorer’s ribbon and click on Options to open the settings. From the Folder Options window, click on the View tab. Find the “Show sync provider notifications” checkbox. Clear the checkbox and save the settings.
Ads / notifications won’t show up anymore.