Login Credentials for on-prem vs. O365

Nrgymover 21 Reputation points
2023-01-04T18:42:50.213+00:00

We have a Hybrid Exchange environment and many users mailboxes are still on-prem. However many users already have an E3 license. The issue occurs when a user will be logged into OWA and is connecting to our on-premise exchange server. When they receive an O365 link ie. https://forms.office.com/ the user get's the error, 'You do not have permission to view or respond to this form', even though the users has an E3 license. When they open up an incognito window and sign into O365 with the same credentials everything works flawlessly. If someone could explain the theory behind how this works that would be great. What is the difference between these two credentials even though the credentials are exactly the same? Thank you.

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
2,894 questions
{count} votes

Accepted answer
  1. Yuki Sun-MSFT 24,841 Reputation points
    2023-01-05T04:15:52.517+00:00

    Hi @Nrgymover

    The issue occurs when a user will be logged into OWA and is connecting to our on-premise exchange server. When they receive an O365 link ie. https://forms.office.com/ the user get's the error, 'You do not have permission to view or respond to this form', even though the users has an E3 license. When they open up an incognito window and sign into O365 with the same credentials everything works flawlessly.

    This is an expected behavior rather than an "issue". Per my understanding, although the credentials look the same, they can be taken as two separate user accounts just with the same password. So, when users are logged in OWA and connecting to the on-prem Exchange server, the on-prem user account is being used, thus error occurs when attempting to access the cloud service which requires a "cloud account" in the same browser window.

    No comments

1 additional answer

Sort by: Most helpful
  1. Nicolas Roche 401 Reputation points
    2023-01-04T20:13:42.563+00:00

    Hello,

    I'm not sure, you need to check. But i think, with OWA, we have a protection link actived and if you use SSO, it's maybe why that work on InPrivate.
    If you do the same from Outlook Desktop, you have the same problem ?

    Best Regards

    No comments