Chances are that your organization has adhered to Microsoft's wishes and forced Copilot onto all users' M365 apps. What a disgraceful idea, setting, and action. This is terrible to see in existence. Nobody should be forced to have to have Copilot buttons anywhere let alone in apps that they have open and use all day long. It should be OPT-IN!
How to stop Copilot from adding itself back to Mac Outlook
Waste time every morning removing it, killing outlook and restarting.
Outlook | MacOS | New Outlook for Mac | For home
3 answers
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Victor1-V 7,730 Reputation points Microsoft External Staff Moderator
2026-04-20T08:48:29.48+00:00 Hi Alison Doucette,
Based on your description, the main concern is that Copilot keeps showing up again in new Outlook for Mac, even though you remove it and restart Outlook each day.
The Q&A Assist answer is pointing to the right control, so I will not repeat its steps. I would like to add one practical check that often explains why the setting does not “stick” on Mac: the Copilot on/off control in Outlook is only available in specific builds, and on Mac it lives under Quick Settings.
- Confirm your Outlook for Mac version is 16.95.3 or later (otherwise the Copilot toggle may not be available where expected).
- After updating, look for the Copilot control under Quick Settings > Copilot (this is the Mac location called out for the “Turn on Copilot” toggle).
- Once that toggle is turned off, it is designed to apply to Outlook on your other devices when you are signed in with the same account.
Please note that this is a user-to-user forum, so contributors can’t change account-side settings for you, but once I know your Outlook version, I can point you to the relevant, supported option for your setup. I look forward to your update.
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Q&A Assist2026-04-19T16:09:04.6333333+00:00 AI generated content. This question contains an answer created with AI from Q&A Assist. Learn moreTo stop Copilot from reappearing in Outlook for Mac, use the Copilot/Toggle settings rather than just closing or restarting Outlook.
- Open Outlook for Mac (new Outlook).
- Go to Settings (gear icon).
- Select the Copilot section (or Copilot tab under Settings).
- Use the Copilot toggle to turn Copilot off for the account:
- Turn the toggle off to hide Copilot entry points such as “Summarize this email.”
- This preference roams with Outlook, so it should persist across restarts and across Outlook clients for that account.
If Copilot is still appearing inside other Microsoft 365 apps (like Word, Excel, or PowerPoint) and that is contributing to the behavior, disable it at the app level:
- In Word/Excel/PowerPoint on Mac, go to the app menu (e.g., Word > Preferences).
- Under Authoring and Proofing Tools, select Copilot.
- Clear Enable Copilot.
- Close and restart the app.
This turns off Copilot capabilities in those apps without needing to change connected services or privacy settings, which can also affect Outlook features.
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