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The issue is caused by a requirement for ‘Modern Authentication’ to be enforced. Once you have successfully signed in, quit out of the application and open it again. I recently had a major issue where a client was seeing constant password prompts when multi-factor authentication (MFA) was enabled for access to Office 365 with his Outlook 2016 client. If prompted, sign in to your account associated with Office. Please remember to mark the replies as answers if they helped. Enter your Mac admin account password and click OK. Weve cleared credential manager on the system. Steps we have taken to resolve the issues. Hi, My Microsoft Outlook for Mac keeps asking for the password for one of my accounts (Hotmail account). What’s more, according to the highly voted reply in following link, we can add sites in the proxy bypass under network settings to avoid these pop-up dialog.Īuthentication required for the server - Office 2016 -Īny more concern, please feel free to post back. Over the past several months weve been experencing a very random issue where Outlook loses users credentials, and then when loading Outlook it prompts for the password, but goes away so quickly you dont have a chance to enter the password. Clear all check-boxes to test the results. We may test this on one problematic client.Īccording to my research, we can add these sites as the exceptions of proxy server in IE.īesides, if error continues, please open File > Options > Trust Center > Privacy Options. Do you mean ExcludeHttpsRootDomain registry key? I found similar thread which says we may add this key under this path:
