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

Son2020 45

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?

Bruce Jing-MSFT 5,640 Reputation points Microsoft Vendor

2024-06-17T06:09:45.62+00:00

Hello, @Son2020

It's been a long time since I've heard from you, have you solved your problem yet? Did my previous reply help you？ If it was useful, you can mark it as an answer. Thank you for your understanding and support.
Son2020 45 Reputation points

2024-06-22T07:54:01.9666667+00:00

Hello, @Bruce Jing-MSFT

No, unfortunately not, the problem is still there.
Bruce Jing-MSFT 5,640 Reputation points Microsoft Vendor

2024-06-24T05:38:44.8633333+00:00

Hello, @Son2020

Have you tried all the official methods? If you have tried all the methods, you can find Microsoft 365 Business support phone numbers based on your country or region:https://learn.microsoft.com/en-us/microsoft-365/admin/support-contact-info?view=o365-worldwide&viewFallbackFrom=o365-worldwide%22learn.microsoft.com%22

3 answers

Bruce Jing-MSFT 5,640 Reputation points Microsoft Vendor

2024-06-05T06:13:59.3533333+00:00

Hi，@Son2020

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.

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

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

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.

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

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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Son2020 45 Reputation points

2024-06-05T07:00:07.64+00:00

I get this error message when I execute the command

I get this error message when I execute the command
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Bruce Jing-MSFT 5,640 Reputation points Microsoft Vendor

2024-06-05T07:36:30.05+00:00

hi，@Son2020

Sorry, the language of your screenshot is German, we are in an English forum here. Can you send it to me as English text?

Son2020 45 Reputation points

2024-06-05T10:59:27.77+00:00

Write-ErrorMessage : ExXXXXXX|Microsoft.Exchange.Configuration.Tasks.ManagementObjectNotFoundException|The operation

could not be executed because the ‘Exchange Online-ApplicationAccount’ object was not found on

‘AXXXXXXXXXXXXXXX.PROD.OUTLOOK.COM’ was not found.

In C:\Users\MaxXX\AppData\Local\Temp\3\tmpEXO_ioip0ugf.olt\XXXXXXX chars:13

Write-ErrorMessage $ErrorObject

+ CategoryInfo : NotSpecified: (:) [get-User], ManagementObjectNotFoundException + FullyQualifiedErrorId : [Server=XXXXXXX,RequestId=XXXXXXXX,TimeStamp=Wed, 05 J un 2024 06:54:23 GMT],Write-ErrorMessage

Son2020 45 Reputation points

2024-06-06T05:03:25.35+00:00

I replaced the most sensitive information with X.

Bruce Jing-MSFT 5,640 Reputation points Microsoft Vendor

2024-06-06T05:35:15.0566667+00:00

Hi，@Son2020

I'm glad to hear from you.

From the error message you provided, we know that the system did not find the object “Exchange Online-ApplicationAccount”. By running the Get-PartnerApplication cmdlet to check if the Exchange Online-ApplicationAccount is present or missing from on-premises. but no error message is returned indicating that it exists.

It is recommended that you run Get-PartnerApplication | Format-List * to see if Exchange Online-ApplicationAccount is really missing.

If you get the same result as me, it means that the object Exchange Online-ApplicationAccount exists.

You can go ahead and run the command I replied to you with last time.

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.

Son2020 45 Reputation points

2024-06-09T12:29:24.75+00:00

Hello

Sorry i think I made a mistake somewhere. I get an output when I run the command (Get-PartnerApplication).LinkedAccount. I ran the command again and here is the output:

Still does not work. when I run the command Get-PartnerApplication | Format-List *

here is the output:

Still does not work.

Bruce Jing-MSFT 5,640 Reputation points Microsoft Vendor

2024-06-10T06:41:07.1733333+00:00

Hi，@Son2020

My last reply may have misled you. Running Get-PartnerApplication | Format-List * only queries information, not modifies settings.

According to the information returned, Exchange Online-ApplicationAccount exists.

You can ignore step 3, refer to the information in the first reply, and proceed to step 1 to step 6 in sequence.

Son2020 45 Reputation points

2024-06-11T16:59:01.14+00:00

I have tried everything Step1 to 6, it doesn't work, always the same error, restarting the server didn't help either.

The problem only affects some users, it works for others.

Son2020 45 Reputation points

2024-06-11T17:01:15.1966667+00:00

I have tried everything, it does not work, step 1 to 6 always the same error, restarting the server has not helped either.

The problem only affects some users, it works for others.

Bruce Jing-MSFT 5,640 Reputation points Microsoft Vendor

2024-06-12T03:05:39.74+00:00

Hi ，@Son2020

I consulted Microsoft's official documentation and found that Microsoft has provided a solution to the problem that Online users cannot view on-prem calendar information.

1.This is the official inspection method:

You can refer to this URL for details:https://learn.microsoft.com/en-us/exchange/troubleshoot/calendars/troubleshoot-freebusy-issues-in-exchange-hybrid#does-freebusy-work-on-premises

2.This problem occurs if the user's Calendar has a time slot that contains more than 1,000 entries.

You can refer to this URL for details：https://learn.microsoft.com/en-us/exchange/troubleshoot/calendars/cannot-view-another-user-calendar-free-busy-information?source=recommendations
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Andy David - MVP 149.1K Reputation points MVP

2024-06-05T11:31:47.2733333+00:00

Have you walked through the troubleshooter?

https://learn.microsoft.com/en-us/exchange/troubleshoot/calendars/troubleshoot-freebusy-issues-in-exchange-hybrid

The error message you describe is not clear to me however.

https://learn.microsoft.com/en-us/exchange/troubleshoot/calendars/users-can-see-only-basic-freebusy-mailbox-information
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Son2020 45 Reputation points

2024-06-05T16:03:25.28+00:00

Yes, as soon as I enter this command, "Set-ADServerSettings -ViewEntireForest $true" the error message appears.

I replaced the most sensitive information with X.

Son2020 45 Reputation points

2024-06-06T05:01:54.85+00:00

What is not clarified in it?

I have only replaced the sensitive things with X.

Andy David - MVP 149.1K Reputation points MVP

2024-06-06T10:53:45.36+00:00

Hi I am referring to this statement:

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

So I am not clear what error end users are seeing. But running through the troubleshooter I referenced above may help

Son2020 45 Reputation points

2024-06-09T12:59:21.11+00:00

The Exchange online User get this error message when he wants to access on premise users calendar

I get this output when I run the command (Get-PartnerApplication).LinkedAccount.

when I run the command Get-PartnerApplication | Format-List *

Output:
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