In the 1607 version of Windows 10 Anniversary Update, Microsoft removed Cortana's on-off. However, the setting is still available if you know where to look.
As with most things characteristics of Windows, you can remove the search button or box entirely if you're sure you won't need it.
Just right-click on the taskbar, and then click Cortana - Hidden.
With this option, you can have access στην πλήρη λειτουργία του Cortana πατώντας το πλήκτρο των Windows και πληκτρολογώντας τον όρο αναζήτησης. Αν θέλετε να απενεργοποιήσετε όλες τις λειτουργίες του Cortana, αφήνοντας μόνο τη δυνατότητα αναζήτησης σε τοπικές εφαρμογές, αρχεία και ρυθμίσεις, θα πρέπει να πειράξουμε λίγο το register.
On a system running Windows 10 Pro or Enterprise Edition, you can use Group Policy to apply the setting to multiple machines in a corporate network. For just one computer, use the local Group Policy Editor.
(Win + R in the window that opens, type gpedit.msc and press enter).
When Computer Configuration> Administration Templates> Windows Components> Search> Enable Cortana opens and set the setting to Off.
or Administrative Templates - Windows Components - Search - Allow Cortana set the setting to disabled.
Αν είστε τώρα σε Windows 10 Home, θα πρέπει να επεξεργαστείτε το μητρώο. (Win+R στο παράθυρο που θα ανοίξει πληκτρολογήστε regedit and press enter)
Follow the route:
HKLM \ Software \ Policies \ Microsoft \ Windows \ Windows Search
(you may need to create this key if it does not exist) and then create the AllowCortana DWORD and set 0 as the value.
Log out and log in again and you'll see that the text in the search box has changed from "Ask me anything" to "Windows Search."