When you use Windows 10's new search feature, and especially if you use, your searches are automatically sent through Microsoft's Bing search engine -- whether you're searching for an online news article or a file on your PC.
This isn't ideal -- especially if you don't want Microsoft potentially spying on your personal, PC-specific search terms.
If you want to use Cortana, you will need to leave this setting turned on. But if you only want to be able to search your computer for files, apps and settings, you can turn this feature off. Here's how:
1. Open the Search menu by clicking the search icon or the search textbox on your taskbar.
2. Turn off Cortana. Click the notebook icon, click Settings, and then switch the Cortana toggle to Off.
3. Turn off search's Web results feature. Click the Settings icon and find Search online and include web results and switch the toggle to Off.
Now, when you open the search menu, you will see a message that says Start typing to search for apps, files, and settings, instead of seeing Bing news stories or Cortana's splash page.