Online
- 01Personal, Microsoft-billed: account.microsoft.com → Services & subscriptions → Microsoft 365 → Cancel. Confirm and save the confirmation screen/email.
- 02Microsoft Store billed (when shown separately): cancel from the Store’s subscription management for that purchase.
- 03Apple billed: Settings → your name → Subscriptions → Microsoft 365 → Cancel Subscription.
- 04Work or school: contact your admin / IT. Only they can change tenant licensing.
- 05Before paid storage ends, download or move OneDrive files you need so you stay under the free quota.