If you are using a university-owned computer, contact your IT group or the Service Desk for assistance.If the computer is a personal device, we recommend updating to the latest macOS version available to you (Mojave or newer).

These operating systems don’t support modern authentication.

MacMail on an Apple computer running macOS 10.13 (High Sierra) or older

Remove and re-add your email profile in the Outlook app or default Mail/Gmail app.

Remove and re-add your email profile in the Outlook app or default Mail app.

If your device has iOS 11 or earlier, you will need to update to iOS 12 or newer.

When you re-add your email profile, you should be redirected to the OSU login screen during setup. Note that removing an email profile does not delete your email or calendar items, as they are stored on the server. Starting October 1, affected users who have not updated will be unable to login on their devices.įor many users, the resolution will be to remove and re-add your email profile to your device. If you have updated some of your devices and continue to receive notices about legacy authentication, please update all of your devices. Unfortunately, we do not have detailed information about which of your devices are using legacy authentication.

If you receive a notification that your account has been seen using legacy authentication, you will need to update one or more of your devices.

How will I know I’m affected?Ĭommunications will be sent directly to affected users beginning April 11, 2022. Some users may also need to update their Office software or email client, or switch to accessing Exchange email via Outlook on the Web. Many users will need only to remove their email profile from their device and re-add it. This may include up-to-date applications that are configured to use legacy authentication even though they support modern authentication. Note: Microsoft disabled legacy authentication for OSU beginning Octoat about 2:15pm.Īpplications using legacy authentication will lose access to OSU email, calendar, or Office 365 services beginning October 1, 2022. This will affect how Microsoft applications are able to sync OSU email, calendar, and other Office 365 tools. Microsoft will end support for legacy authentication beginning October 1, 2022.

Office 365 mac os 10.13