How do I stop Copilot from adding to my Outlook?

Same problem. I "turn off " Copilot in Outlook (on web), save, refresh the page, and it is turned back on. The toggle is fake.

I have organization administrator access and after digging around for half an hour, I cannot find a way to turn it off. There is a Copilot "Settings" tab that actually has no settings. Links that look like you could follow them to change settings are not clickable. For example there is one that says "Allow copilot access for your users." This is simply marked as "complete" and although that line is hyperlinked, clicking it does nothing.
There is a dashboard with an adoption score to gamify admins deploying Copilot to "encourage users to make Copilot a daily habit." (gross) There is another onboarding dashboard with lots of cards encouraging you to set it up on an organization level, but again, no actual settings to turn it off. This feels unethical. 

I have sent a feedback message to Microsoft letting them know I do not want Copilot, if only because it is important that we are vocal about wanting the option to turn it off.

I have the exact same problem on my outlook app for Android. I turn off copilot in the settings, and within some minutes or sometimes up to 24 hours, the slider for activation of copilot is turned back on. I have ms 365 classic that i bought in February.

The copilot problem started in August for me. I have been in contact with customer support and send multiple videos, updated the outlook app multiple times, reinstalled outlook.

The customer service has been totally worthless as Microsoft auto translates all chat to my native language even though I communicate in English with the english speaking tech guy. Microsofts translation english to Norwegian is utterly worthless (my guess is copilot translate it) 

This is not a bug. This is intentionally done by Microsoft. When my 365 subscription expires in Feb 26 I will take the leap to protonmail, linus os, and absolutely remove everything Microsoft related from my machines. This is a shame.

How do we stop this badgering in Teams?

Microsoft has issued a fix for this in Classic Outlook 2019.

See the reply from Gabriel Bratton Microsoft Agent | Moderator on July 9, 2025 in this thread

https://answers.microsoft.com/en-us/outlook_com/forum/outlk_win-outtop_classic-outsub_ofh/how-to-remove-copilot-dropdown-on-outlook-classic/cbdc26c7-ce72-40b4-98a1-2f757fcc7daf?messageId=f271db56-fc02-4cc7-94dd-aa3663769577&page=3

Microsoft has issued a fix for Classic Outlook 2019.

See the reply from Gabriel Bratton Microsoft Agent | Moderator on July 9, 2025 in this thread.

https://answers.microsoft.com/en-us/outlook_com/forum/outlk_win-outtop_classic-outsub_ofh/how-to-remove-copilot-dropdown-on-outlook-classic/cbdc26c7-ce72-40b4-98a1-2f757fcc7daf?messageId=f271db56-fc02-4cc7-94dd-aa3663769577&page=3

it seems to have disappeared for me.

Copilot is an integral part of Microsoft’s ecosystem, designed to encourage users to work smarter and more efficiently. I’ve personally used Copilot, and the results have been outstanding.

It truly feels like a helpful companion, especially in Outlook. And it's not limited to Outlook alone—using Copilot in Microsoft Excel or Word can significantly reduce your workload, often by one-third.

Exact. Same. Thing. Happening. Here. Our company does not have an organizational setting that is pushing it. It's all Microsoft. Our tech guys said this to me:  

"These AI integrations have been a pain in the neck and I know it's not just Microsoft. Google had forced Gemini to all of their products as well and they make it impossible to remove the feature because they really want it to get used. I conducted some extensive research on this issue and, unfortunately, there does not appear to be any way to permanently remove Copilot from the Microsoft 365 apps for Enterprise. I can't even find any controls in the Admin center to at least disable the feature for users. The best solution I have found next to continuously uninstalling the feature is to browse to the following location in any M365 app:
 
-File
-Office Account
-Account Privacy
-Manage Settings
-Uncheck "Turn on option connected experiences"
 
This supposedly prevents Copilot from working, but also disables other connected experiences that you can learn more about here: https://learn.microsoft.com/en-us/microsoft-365-apps/privacy/optional-connected-experiences
 
Hopefully enough people will complain and Microsoft will give us a way to completely disable Copilot for people that do not wish to use it or quit forcing the feature to reinstall after a period of time."

Copilot keeps coming back because it’s likely being auto-installed by Microsoft updates or your organization’s settings. You can try removing it under File > Options > Add-ins, but if it returns daily, it’s probably managed by your IT or policy settings. You may need to contact your admin or IT support to permanently block it.

Typically I can answer questions without an internet search but I remember doing this actually to mine a long time ago. I did add copilot for sales on my own. This is what it said and that's what I remember doing lol. 

To disable Copilot in Outlook, navigate to File > Options > Copilot and clear the "Enable Copilot" checkbox