In recent times, office 365 pop3 not working has become increasingly relevant in various contexts. Can't connect to Outlook with POP/IMAP and Modern authentication .... This module examines how clients connect to Microsoft 365. It also provides instruction on how to configure name resolution and Outlook clients, and how to troubleshoot client connectivity. FIX: Outlook 0x800CCC92 Logon Failure to Office365 POP3 mail server ....
Building on this, if Outlook for Windows fails to authenticate with the Office365 POP3 email server with error 0x800CCC92, reading below to fix the problem. This perspective suggests that, how to Fix Outlook won't Connect to POP3 Server Issue?. Learn how to troubleshoot and resolve Outlook's inability to connect to a POP3 server issue. Explore reasons behind the problem and step by step solutions to fix it.
Building on this, outlook fails to connect to office365 online using pop3. Additionally, greetings fellow Sysadmins, I have a user who works for multiple clients. She has 2 office 365 online email accounts.

As of yesterday, the one account kept asking for a password when trying to log in. From another angle, i have enabled legacy in office 365 Admin but no luck. I understand this will be disabled by Microsoft in October 2022. POP3 and IMAP4 in Exchange Online | Microsoft Learn. After you enable POP3 and IMAP4 client access, you have to give users the information in the following table so that they can connect their email programs to their Exchange Online mailboxes. POP, IMAP, and SMTP settings for Outlook.com - Microsoft Support.
If you're trying to add your Outlook.com account to Outlook or another mail app, you might need the POP, IMAP, or SMTP settings. You can find them below or by viewing them in your Outlook.com settings. POP3 incoming server outlook.office365.com suddenly not working.. Outlook Desktop does not support POP or IMAP in the service with modern auth so those won't work after October. Additionally, the best thing to do is to switch your account to an Exchange connection. Fix your Outlook email connection by repairing your profile.
Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue. In relation to this, in Outlook, choose File. Choose Account Settings > Account Settings. On the Email tab, choose your account (profile), and then choose Repair.
Similarly, office 365 email (s) no longer available through POP3. Moreover, it's not the POP access itself, which is still working for me, but sometimes the access gets screwed if there's ever any hiccup at the server. The symptom for me is always 'password was rejected, please re-enter'.


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