By default, Windows 10 sends everything you search for on the Start menu to the servers for Bing search results So make sure you do not enter anything private in the startup menu of your own PC. Or you can simply disable the Bing integration in the Start menu.
Update : We now have a new solution that works in modern versions of Windows 1
It's worth noting that the standard Android and even iOS search also sends your search results to their servers for more relevant results, but it seems to be different when you're on your PC in your home trying to get yours to browse personal files.
We're definitely glad they offer the ability to easily disable Web integration – if you want to use Cortana, be careful, you have no choice as to whether the Start menu uses Bing, and you need to disable Cortana to disable web integration.
Disable Bing Integration on the Start Menu
You must edit the Windows Registry Disable Web Search on the Start menu.
Here is our default warning: Registry Editor is a powerful tool. Incorrect changes can cause your system to become unstable or even inoperative. This is a simple change, and if you follow the instructions, you should be fine. If you have never used it, you should check the use of Registry Editor. It is always recommended that you back up your registry (and your computer) before making any changes.
Open Registry Editor by pressing Start and typing regedit. Double-click the displayed "Registry Editor" shortcut (or press Enter), and then click Yes at the User Account Control (UAC) prompt.
In Registry Editor, use the left sidebar to navigate to the following key:
HKEY_CURRENT_USER SOFTWARE Microsoft Windows CurrentVersion Search
Right-click the search icon and select New> DWORD Value (32-bit). Name the new value
Double-click the new value
BingSearchEnabled to open the Properties dialog. The number in the field "value data" should already be 0. Make sure it is still 0. Click OK to continue.
BingSearchEnabled you should see
CortanaConsent . Double-click this value to open the properties dialog box. Change the "Value Data" field to "0".
If you do not see
CortanaConsent create it by following the same steps you used to create
BingSearchEnabled . [19659005
You can now close the Registry Editor. There is no reason to restart the computer as the change takes effect immediately. When you browse your Start menu, you should now see only local results.
If you want to return the search results, you have everything open the Registry Editor, and change the values for
CortanaConsent back to 1.
Download Registry Explorer in one click.
 File Explorer with the registry files. "width =" 650 "height =" 382 "src =" /pagespeed_static/1.JiBnMqyl6S.gif "onload =" pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon (this); "onerror =" this.onerror = null; pagespeed.lazyLoadImages.loadIfVisibleAndMaybeBeacon (this); "/>
If you do not want to make the registry changes yourself, we've created two downloadable files that you can use, one disables Web Search from the Start menu, and the other re-enables Web Search are included in the following ZIP file and work only by changing the values described above Double-click the file you want, click the prompts, and the change should take place immediately.
Download files for web search:  Disabling the Bing Integration in the Start Menu the Old Way
Update : Microsoft has released this simple graphical option from the Anniversary Update of Windows 10 e Even if you disable Cortana with a registry or group policy optimization, Windows 10 does not disable web search on the Start menu. However, you can search Google's Start menu instead of Bing if you want.
RELATED: To create the Cortana search with Google and Chrome instead of Bing and Edge
Fortunately, Bing is very easy to disable, and you just have to turn off the screen with the Cortana search settings. The easiest way is to enter "Cortana Preferences" in the Start menu and select "Cortana & Find"
This will bring up the Preferences dialog depending on whether you have Cortana or disabled, will not look different.
If you want to disable Bing integration, you must also disable Cortana – then turn off the switch.
After disabling Cortana, the rest of the dialog changes and you will see an option for "Search online and include web results" You also want to disable it – so actually disable Bing via the Start menu.
If you search for something now, only your own PC will be searched.
 Notice how clean it is now – and it says "Search my stuff" instead of "Search the Internet".
Note that you want to disable the search box on the taskbar when you right-click it and select the Hidden option.