How to Turn Off File Explorer Ads on Windows 10: 5 Steps
Step 1: Open your File Explorer. You can open File Explorer by clicking on your File Explorer shortcut below.
Step 2: Head over to View. Then Options. Finally, Change folder and search options.
Step 3: Once you’re in the Folder options window, head over to the View tab.
Step 4: In the Advanced settings list, scroll down until you see the option Show sync provider notifications.
Step 5: Finally, just uncheck that option and then select OK to close the window. Done!