I have Revo Uninstaller which is a great solution for removing programs and their registry entries. It did not remove Copilot. I tried other suggestions using regedit and those did not work. I have microsoft 365 with Word. Not much help anywhere. I do not think it can be removed.
After wasting hours and almost ready to give up I was able to prevent Word from invoking Copilot every time I opened Word.
- open Word 2) in the lower left are Account and Options, click Options 3) select Copilot 4) under "Options for working with Copilot in Word" check the box to disable Copilot. Copilot can be enabled from here in the same way.
Open Word and Copilot did not get invoked. The Copilot symbol in the task bar is now greyed out. Copilot remains on my computer.
As an aside, Microsoft continues to install more garbage called Microsoft Edge which cannot be stopped. Revo Uninstaller will get rid of it quickly. Microsoft sucks. Unfortunately, I use programs to write software and they are only available on MS. Microsoft is used everywhere and can never be secure and requires constant updates to block the newly discovered holes in the OS. We are all stuck in the same boat.
Good luck