When you enable modern authentication in Exchange Online, Windows-based Outlook clients that support modern authentication (Outlook 2013 or later) use modern authentication to connect to Exchange Online mailboxes. Modern authentication is based on the Active Directory Authentication Library (ADAL) and OAuth 2.0. Modern authentication in Exchange Online enables authentication features like multi-factor authentication (MFA), smart cards, certificate-based authentication (CBA), and third-party SAML identity providers. That are not yet there in new EAC at Other Features or use Global Search that will help you Other admin centers and remaining ones will soon be migrated to New EAC. While most of the features have been migrated to new EAC, some have been migrated to Microsoft recommends using the new Exchange Admin Center, if not If you're running Office 2013, make sure that both Outlook and MSO are updated to the Decemupdates, or a later update release, before you use this registry key.Effective from December 2022, the classic Exchange Admin Center will be deprecated for In the Value data box, type 1, and then click OK. Right-click AlwaysUseMSOAuthForAutoDiscover, and then click Modify. Type AlwaysUseMSOAuthForAutoDiscover, and then press Enter. On the Edit menu, point to New, and then click DWORD Value. In Registry Editor, locate and click the following registry subkey: HKEY_CURRENT_USER\Software\Microsoft\Exchange
Before you modify it, back up the registry for restoration in case problems occur.Ĭreate the following registry key to force Outlook to use a newer authentication method for web services, such as EWS and Autodiscover. Serious problems might occur if you modify the registry incorrectly.
Follow the steps in this section carefully.
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