Only one user in the cloud cannot open the shared calendar of all users on-premise.

Question

Only one user in the cloud cannot open the shared calendar of all users on-premise.

Tanisorn Sowudomsilp 251

Hi All,

Our customer has an issue with the shared calendar for only one user in the cloud, other users are fine.

The error picture below is occurring when trying to open the shared calendar.

User's image

How can I resolve this? Please suggest a solution.

Thanks.

Aholic Liang-MSFT 13,881 Reputation points Microsoft External Staff

2023-08-07T07:42:25.8833333+00:00

Hi @ Tanisorn Sowudomsilp，

It has been a few days and I am checking in to see how things are going on with this issue.

If you need further help, please provide more detailed information, so that we can give more appropriate suggestions.

I look forward to hearing from you.

1 answer

Your answer

Aholic Liang-MSFT 13,881 Reputation points Microsoft External Staff

2023-08-07T07:42:25.8833333+00:00

Hi @ Tanisorn Sowudomsilp，

It has been a few days and I am checking in to see how things are going on with this issue.

If you need further help, please provide more detailed information, so that we can give more appropriate suggestions.

I look forward to hearing from you.

Answer 1

Vasil Michev 117.1K MVP

There's not much to go on, given the error message above. It's probably best if you open a service request to report this.

To cover the basics, ask the user to try with a different browser, preferably using Incognito/Private session. Try and verify whether he can access other shared calendars, to exclude potential issues with his own account. Removing/re-adding the permissions on the calendar might help too.

Tanisorn Sowudomsilp 251 Reputation points

2023-08-06T01:52:45.68+00:00

Hi, Vasil Michev,

Thank you for your suggestion, but other browsers don't work either, even in private session mode.

Additionally, it cannot open the shared calendar on Microsoft Outlook either.

What do you suggest?
Vasil Michev 117.1K Reputation points MVP

2023-08-06T08:41:54.4533333+00:00

If Outlook doesn't work either, the issue is likely with the config. Can the user open calendars/see free busy for other cloud-homed mailboxes? Does he have a matching user object on-premises and where does its targetaddress attribute point at?

Go over the steps in the Hybrid free-busy troubleshooter to cover the basics: https://learn.microsoft.com/en-us/exchange/troubleshoot/calendars/troubleshoot-freebusy-issues-in-exchange-hybrid
Tanisorn Sowudomsilp 251 Reputation points

2023-08-07T10:01:07.95+00:00

Hi Vasil Michev,

All users work normally, whether opening the shared calendar on Microsoft Outlook or all web browsers. However, I have only one user who doesn't work normally. But now I have already opened a case with Microsoft support either, sir.
Aholic Liang-MSFT 13,881 Reputation points Microsoft External Staff

2023-08-08T07:04:51.73+00:00

Hi @Tanisorn Sowudomsilp,

Thanks for letting us know the current status of this issue. Hopefully it can be resolved soon! And it's really appreciated that you are willing to keep us posted with the solution, that would definitely be beneficial to others reading this thread.
Tanisorn Sowudomsilp 251 Reputation points

2023-08-11T08:11:18.65+00:00

Hi All,

Microsoft M365 suggest us to do "iisrest" on the Exchange Server but It doesn't work. We have already updated the information to Microsoft M365 and waiting for suggestions. The issue is with only one user in the cloud who doesn't work.

I will let you know about any updates.

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Only one user in the cloud cannot open the shared calendar of all users on-premise.

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