The use of Microsoft To Do apps with a work or school account is subject to a few conditions including licensing, admin preferences, and pre-requisites. Below you'll find information on each of those conditions and what to do in the event you see any errors related to them.
Microsoft To Do is currently available to users in the following Microsoft 365:
Microsoft 365 Firstline F1
Enterprise Firstline F1
Enterprise Firstline F2
Secure Productive Business
Secure Productive Enterprise E3
Secure Productive Enterprise E5
Microsoft 365 A3
Microsoft 365 A5
Please note that this release does not include governmental organizations or tenants on sovereign/independent clouds. In addition to having a license for one of the suites above, you'll also need an Exchange Online mailbox for storage and sync to work. As a result, we're unable to support on-premise Exchange accounts if they don't also have mailboxes 'in the cloud'. If you believe that you've received either message in error or want to learn more about getting access to Microsoft To Do, it's best to contact your IT admin as they will be best able to assist you.
Your Microsoft 365 subscription includes user-level licenses for Microsoft To Do , which your admin can use to manage individual access to the Microsoft To Do apps. If your admin has opted to disable your license for Microsoft To Do, even temporarily, you will not be able to use the apps for Windows, iOS or Android. If you believe that you've received this message in error or want to learn more about getting access to Microsoft To Do, it's best to contact your IT admin as they will be best able to assist you.
Microsoft To Do currently requires an Exchange Online mailbox in order to store and sync your to dos. Since these are crucial functions of Microsoft To Do, you won't be able to use the app until you have an Exchange Online mailbox. Plans currently supported include: Exchange Essentials, Exchange Online Kiosk, Exchange Online Plan 1, Exchange Online (Plan 1), Exchange Online (Plan 2), Exchange Online (P1), and Exchange Online POP.
As a result, we're unable to support on-premise Exchange accounts if they don't also have mailboxes 'in the cloud'. We are working to support more account types in the future but in the meantime, it's best to contact your IT admin about getting access as they will be best able to assist you.