Click the Start button on your Windows taskbar.
Go to Settings, then select Apps > Apps & Features.
Find allFiles in the list of installed applications and click Uninstall.
Follow the on-screen instructions to complete the uninstallation.
During installation, you may have chosen to set Yahoo as your default search engine in Google Chrome.
Uninstalling this application does not automatically change your browser settings.
Clear step-by-step instructions (Chrome only):
Open Google Chrome.
Click the three dots (top right).
Go to Settings.
Click “Search Engine”.
Select your preferred search provider.
*You can modify your search settings at any time via Chrome settings.