Forum Discussion

MatoBoost's avatar
MatoBoost
Tin Contributor
Jul 02, 2026

New Outlook: "Changing the ImapRemoteServerInfo is not allowed" after host migration

Hi everyone! I've migrated my domain/mailbox from one IMAP host to another in May. It cannot be added to New Outlook for Windows — fails instantly with INVALID_CREDENTIALS INTERACTION_REQUIRED, even...
office 365
outlook for windows
Lyubo's avatar
Lyubo
Copper Contributor
Oct 05, 2026

RobertSparnaaij​ - Hello Robert, I can imagine this is not your main topic to deal with, but will appreciate if you can help me with the same issue - new Mail host - MS keeps the old IMAP details. May I send you over my details?

Best regards

Lyubo

  • RobertSparnaaij's avatar
    RobertSparnaaij
    MVP
    Oct 05, 2026

    Hi Lyubo​,
    Yes, I'm currently still taking Private Messages for this topic to escalate the mailboxes to the Outlook Team for a reset.

    • RobertNg's avatar
      RobertNg
      Copper Contributor
      Oct 30, 2026

      Hi Robert,

      I am experiencing the same New Outlook IMAP migration issue.

      We migrated our email hosting from SmartServers to DreamIT, but New Outlook keeps restoring the old IMAP server configuration.

      I have already tried repairing the accounts, removing them from all devices, and testing in a fresh Windows user profile. Nothing has worked.

      Newly configured accounts connect successfully to DreamIT, while previously configured accounts continue using SmartServers.

      Could you please help escalate a server-side reset of the old IMAP configuration?

      I can provide the affected email addresses privately.

      Thank you,

      Tuan

    • AndryMahefa's avatar
      AndryMahefa
      Copper Contributor
      Oct 21, 2026

      Hello RobertSparnaaij​, my post above just got approved.

      I am attempting to send you a private message with the account parameters as requested, but the Tech Community website's outbound messaging tool is completely freezing and refusing to submit on my profile page.

      Microsoft Support has already verified the backend block under Case Reference 7110532601. Could you please initiate a direct message thread from your end? Once I receive your incoming message notification, I will be able to reply to it instantly with the affected mailbox address that needs the backend ImapRemoteServerInfo purge.

      Thank you for your help !

    • ivan_alex's avatar
      ivan_alex
      Copper Contributor
      Oct 19, 2026

      Hey RobertSparnaaij​ thanks for helping people out with this. I also sent you a DM a few days ago but it doesn't show up as "Sent" or anything like that in my profile. So just a quick followup here in case you haven't seen the DM :)