Forum Discussion

MatoBoost's avatar
MatoBoost
Copper 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
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.

TomPersson's avatar
TomPersson
Copper Contributor
Oct 13, 2026

hi RobertSparnaaij​ 

You are wellcome to use my case as well for my private account mailto:email address removed for privacy reasons.

I have precisely the issues after i have changed ISP for my private email 3 month ago.

After i spend hours with Microsoft support (3 different support engeneers) who just could suggest recreate the account, outlook reset, use POP 3 etc i tried the leaning community under here

https://learn.microsoft.com/en-us/answers/questions/6030791/

And after several discussions with Hornblower409 i ended in this thread.

Under the problem diagnose i discovered that at some stage i microsoft tenant for my private email had been created, even though i had no subscription for my private email.

I tried to delete it hoping vthe it would remove the settings from my old ISP - but it did not :-(

So im in the same position waiting for a fix