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PKlapwijk's avatar
PKlapwijk
MVP
Feb 03, 2017

Outlook prompts for password using ADFS 3.0

Hi all,   I have an environment with Exchange 2010 in a hybrid setup with Office 365. We have ADFS 3.0 running which is working fine when, for example, we logon to portal.office.com. We migrated ...
office 365
PKlapwijk's avatar
PKlapwijk
MVP
Feb 03, 2017
Hi,

Yes I did. Adfs itself works fine by using the browser, but only not when using Outlook 2016
Graham Lindsay's avatar
Graham Lindsay
Copper Contributor
Jan 29, 2020

PKlapwijk Although this is an old article. I just wanted to add my findings as i have experienced exactly this.

 

What solved my problem was https://support.microsoft.com/en-gb/help/3126599/outlook-prompts-for-password-when-modern-authentication-is-enabled

 

This fix was:

  1. HKEY_CURRENT_USER\Software\Microsoft\Exchange
  2. On the Edit menu, point to New, and then click DWORD Value.
  3. Type AlwaysUseMSOAuthForAutoDiscover, and then press Enter.
  4. Right-click AlwaysUseMSOAuthForAutoDiscover, and then click Modify.
  5. In the Value data box, type 1, and then click OK.

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