Enable modern authentication for Office 2013 clients

 After enabling and enforcing MFA for office 365 users may experience mails stop working in outlook application for office 2013.In this case we have to enable modern authentication in windows registry.

Modern authentication is already enabled for Office 2016 clients, you do not need to set registry keys for Office 2016.

To enable modern authentication for any devices running Windows (for example on laptops and tablets), that have Microsoft Office 2013 installed, you need to set the following registry keys. The keys have to be set on each device that you want to enable for modern authentication:

ENABLE MODERN AUTHENTICATION FOR OFFICE 2013 CLIENTS

Registry key

Type

Value

HKCU\SOFTWARE\Microsoft\Office\15.0\Common\Identity\EnableADAL

REG_DWORD

1

HKCU\SOFTWARE\Microsoft\Office\15.0\Common\Identity\Version

REG_DWORD

1

Once you have set the registry keys, you can set Office 2013 devices apps MFA with Microsoft 365.

If you're currently signed-in with any of the client apps, you need to sign out and sign back in for the change to take effect. Otherwise, the MRU and roaming settings will be unavailable until the ADAL identity is established.

Disable modern authentication on devices

To disable modern authentication on a device, set the following registry keys on the device:

DISABLE MODERN AUTHENTICATION ON DEVICES

Registry key

Type

Value

HKCU\SOFTWARE\Microsoft\Office\15.0\Common\Identity\EnableADAL

REG_DWORD

0