Outlook 2016 not connecting to Office 365

Question

Hello Forum Members ,&nbsp;Hope you are all fine and safe.&nbsp;&nbsp;I came across a problem with configuration Outlook on MS Outlook 2016 for Office 365 email account.&nbsp;The outlook keep prompt password for but not authenticating/accept password. The authentication shows the domain name eg:- domain.com and asking the password.&nbsp;&nbsp;The authentication page not showing the authentication to Office 365 login, in shows the authenticate to my domain like on prem exchange server.&nbsp;&nbsp;If i try Office 365 outlook version its works fine for the same domain.&nbsp;&nbsp;==I have another domain in same Office 365 tenant, all of them works fine.&nbsp;This domain also was working fine, only recently changes we had on this domain, changed the name server for public DNS. I have checked Office 365 DNS entry didn't found&nbsp; any errors.&nbsp;&nbsp;If anybody knows work around with this, kindly extend your support.&nbsp;Thank you&nbsp;Regards,&nbsp;FARIS&nbsp;&nbsp;

peterrising · Answer

farispv&nbsp;&nbsp;Hi, the first suggestion I would have is to run the Support and Troubleshooting tool (SARA) on the affected machine.&nbsp; You can download this from here -&nbsp;https://www.microsoft.com/en-us/download/100607&nbsp;This tool which ask you some questions and try and diagnose the issue for you, and may help in your initial troubleshooting.&nbsp;&nbsp;

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Outlook 2016 not connecting to Office 365

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