You can easily disable Copilot in Windows 11 Pro, but you'll need a third party tool to do the same in Home

pcgamer.com:

Windows Copilot is here, and if we're honest it's a little underwhelming for the time being. Arriving in the optional KB5031455 «Moment 4» update for those of us not in the Windows Insider programme, Copilot is an AI assistant that aims to help you with all sorts of daily tasks via a Chatbot style sidebar. For those of you that feel a little uneasy about an AI assistant inside your OS, the good news is that it can be disabled. For Pro users this is easy enough to do, but if you're running Windows 11 Home it appears you'll need to install a third party tool to achieve the same result.

If you'd like to disable Copilot entirely, Pro users can follow the relatively straightforward method described below. However, it used to be possible to disable Copilot in Windows 11 Home by modifying a registry entry, as described in many online guides still. 

Since the most recent update, this entry no longer seems to exist in the registry, which means those of you on Home will now have to resort to third party tools like DoNotSpy11 in order to disable it entirely.

If you don't know what version of Windows 11 your system is running simply right click the start button and select 'System' from the menu that pops up. Under 'Windows specifications' it will say whether you're running either the Pro or Home variants.

Quite why Microsoft has decided to make this feature so difficult to disable for Home users is unclear, but it's not a great look to require your customers to rely on separate software to control such a prominent new feature, and such a potentially controversial one to boot. 

Windows 11 has already received significant backlash since its launch for the level of telemetry tracking and advertising data it's capable of collecting, and