I have compared wireshark packets and believe it has something to do with responses. Outlook all of a sudden asking for password with Modern Auth and MFA Enabled. You can't select multiple attachments of. com Go to Settings -> Org Settings -> Modern authentication. Locate and then select the following registry subkey: HKEY_CURRENT_USER\Software\Microsoft\Exchange On the Edit menu, point to New, and then select DWORD Value. Modern authentication won't always be one of the supported authentication methods for some connection types. Note To fix this issue, see KB3114976 for the information on how to replace the AlwaysUseMSOAuthForWebServices registry key with the AlwaysUseMSOAuthForAutodiscover registry key. Right click on CMD, then click "Run as administrator" 3. These are all domain joined systems but don't see any GPO's that would cause the issue. It is recommended that users force Outlook to use Modern Authentication by An Unexpected Error has occurred. recommends setting the AlwaysUseMSOAuthForAutoDiscover value to . Right-click AlwaysUseMSOAuthForAutoDiscover, and then click Modify.
For instance (Exchange Online): Here’s relevant article: How modern authentication works for. Apr 11th, 2020 at 11:59 AM Try this first in Windows 10. Open your web browser and log in to the Azure Active Directory admin center. Good Afternoon - I enabled the multi-factor authentication just App passwords bypass MFA for basic authentication, for modern authentication they do not work. Input the user credentials, check the option of 'User Autodiscover,' and click the Test button.
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