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Hi all
Hope you can help.
We have Exchange 2013 and I've run the hybrid the migration wizard with no errors at all.
My next step was to try to migrate a mailbox in ECP selecting the Office 365 tab and this is where I am stuck.
I see the following error...
login.microsoftonline.com refused to connect.
If I use a private browsing window then it prompts for a login and I pop in the main 365 admin account, I then get the same error.
I have ensured that all accounts I use have the Organization Management and Recipient Management role. I have confirmed that the MRSProxy service is on.
Really not sure what to do next to resolve this and would really appricate any help you can offer.
I would suggest you login https://outlook.office365.com/ecp/ then try to migrate mailboxes directly.
The conversion between Exchange on-premises and Office 365 tab is unstable, it also controlled by Brower settings, such as saved password and cookies setting.
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I did try that but it just takes me to the Exchange 365 admin centre. There doesn't appear to be any way of migrating the on-prem mailboxes from there.
Here is it(Old version Exchange online admin center):
New version:
Fantastic, thank you so much. Turned out our remote endpoint was wrong but fixed that and all looks great now.