Using Outlook for Android for personal email and calendar management
You’re running into a known issue: Outlook for Android currently re‑enables the Copilot toggle automatically, even after users manually turn it off. This behavior has been widely reported and is not caused by anything you’re doing wrong. The toggle in the mobile app is not persistent, and Microsoft has not yet released a permanent fix for Android specifically.
Disable Copilot at the Microsoft 365 account level (the only persistent method)
If your Microsoft account is part of Microsoft 365 (Personal, Family, Business, or Enterprise), Copilot is controlled as an Integrated App. When disabled at the account level, Outlook mobile cannot re-enable it.
This must be done from a browser:
- Sign in at admin.microsoft.com (works for Personal/Family too).
- Go to Settings → Integrated apps.
- Find Copilot for Microsoft 365.
- Open Manage access.
- Remove yourself from the assigned users.
This prevents Outlook mobile from reactivating Copilot because the service is no longer provisioned to your account.