Forum Discussion
Nanfang
Jul 11, 2023Copper Contributor
Outlook 2016 suddenly not working
Hello, We have several machines installed with Outlook 2016 which is connected to outlook.office365.com pop3 server. Right after July 4 holiday all these clients cannot connect to the server to d...
Jul 12, 2023
Is there any reason why you use a POP3 account in Outlook 2016 with Exchange Online instead of using an Exchange account type?
Exchange Online no longer supports Basic Auth and that is what you are using when you configure via POP3. Use an Exchange account type for full feature support and connectivity via Modern Authentication (OAuth 2.0).
If you still want to continue to use POP3, you must register it as an application first within your tenant. For instructions see; Authenticate an IMAP, POP or SMTP connection using OAuth | Microsoft Learn
- NanfangJul 12, 2023Copper ContributorHi Robert,
Thank you for your info. We have these accounts set up with the old Godaddy email. And when Godaddy switches to Office 365 we just keep all the settings. I'm going to see what we should do. Thanks again for your comment.