![]() To determine whether your Office installation is Click-to-run or MSI-based:įrom the File menu, select Office Account.įor Outlook 2013 Click-to-Run installations, an Update Options item displays. To enable MFA for Office 2013 client apps, you must have the following software installed (the version listed below, or a later version) based on whether you have a Click-to-run based installation or an MSI-based installation. For more information, see Basic authentication in exchange online. This means that if Outlook 2013 is not configured to use modern authentication, it loses the ability to connect. ![]() Basic authentication is turned off for Exchange Online mailboxes on Microsoft 365.
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