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Here's how:
Method One, use Group Policy to disable Cortana
With WIN10 Professional or Enterprise Edition users, you can use Group Policy to completely disable Cortana features:
1. Use Windows + R shortcut to open "Run"-Execute gpedit.msc Open Group Policy Editor.
2. Navigate to the Computer Configuration "-" Administrative Template "-"windows component "-" search.
3. In the right panel, locate the "Allow cortana" entry to be set to Disabled ".
Method Two, use the registry to disable Cortana
For Win10 home users, you can completely disable Cortana features directly from the registry:
1. Use Windows + R shortcut key to open "run"-Regedit open registry.
2. Navigate to the following path:
Hkey_local_machine\software\policies\microsoft\windows\
3. Create a new item named Windows Search.
Win10 How to completely disable Cortana? Ways to completely disable Cortana