How to enable modern authentication for Office 2013

Recently, Microsoft has removed the basic authentication for all its Microsoft 365 services. Basic authentication is turned off for Exchange Online mailboxes on Microsoft 365 which means that if Outlook 2013 is not configured to use modern authentication, it loses the ability to connect.

To enable modern authentication for Office 2013, a Windows Registry setting must be implemented. This can be achieved manually by adding the following key:

The EnableADAL registry key referenced earlier must be created (Reg_DWORD) and set to 1:

HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Common\Identity\EnableADAL = 1

A quicker way is by adding these code into a notepad, and save the file with the file extension .reg instead of .txt   :

Windows Registry Editor Version 5.00




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