https://www.elevenforum.com/t/add-or-remove-ask-copilot-context-menu-in-windows-11-and-10.35985/
This tutorial will show you how to add or remove the “Ask Copilot” context menu item for your account or all users in Windows 10 and Windows 11.
Starting with Copilot app version 1.25044.93.0, “Ask Copilot” is added to the context menu.
The Ask Copilot context menu item is available when you right click or shift + right click on one or more PDF, image, or text files.
When you click on the “Ask Copilot” context menu item, it will open the Copilot app with the file(s) uploaded (copied) to Copilot so you can chat and ask about the file(s) with Copilot.
If you don’t want this Ask Copilot item in the context menu, it can be removed without having to uninstall the Copilot app…