Exchange Online users are unable to view on-premises calendar information

Son2020 45 Reputation points

Hello everyone,

I have a problem with Outlook and need help.

I have moved some users to Exchaneg online. Now when an exchange online user wants to access on premise users calendar, he gets the message above Calendar information cannot be updated.

This does not happen for all on premise users, but only for some of them. I do not understand this. What can this be?

Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,143 questions
Microsoft Office Online Server
Microsoft Office Online Server
Microsoft on-premises server product that runs Office Online. Previously known as Office Web Apps Server.
608 questions
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.
4,316 questions
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3 answers

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  1. Bruce Jing-MSFT 1,770 Reputation points Microsoft Vendor


    Thanks for posting your question in the Microsoft Q&A forum.

    Your email system is a hybrid environment, but some Online users cannot view local calendar information.

    This problem may be caused by a configuration problem in a hybrid deployment. Here are my suggestions:

    Step 1: Run the Get-PartnerApplication cmdlet to check if the Exchange Online-ApplicationAccount is present or missing from on-premises.

    In our example, there is no output after we enter the below command.

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    Step 2: Run the Set-ADServerSettings cmdlet, including -ViewEntireForest parameter, to view and manage all the objects in the forest.

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    Step 3: Run the Get-User cmdlet to get the Exchange Online-ApplicationAccount user account.

    A screen shot of a computerDescription automatically generated

    Step 4: Run the Set-PartnerApplication cmdlet to link the Exchange Online-ApplicationAccount on the PartnerApplication.

    [PS] C:>Set-PartnerApplication "Exchange Online" -LinkedAccount "exoip.local/users/Exchange Online-ApplicationAccount"

    Step 5: Run the Get-PartnerApplication cmdlet to verify that the Exchange Online-ApplicationAccount is set to LinkedAccount.

    A screenshot of a computerDescription automatically generated

    Step 6: Run the IISReset command to restart IIS (Internet Information Services)

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    If my answer is helpful to you, please mark it as the answer so that other users can refer to it. Thank you for your support and understanding.


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  2. Son2020 45 Reputation points

    I get this error message when I execute the command

    I get this error message when I execute the command

    User's image

  3. Andy David - MVP 143.8K Reputation points MVP