Follow these troubleshooting steps if you have issues with Calendar Interop.
Issue | Explanation & resolution |
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When trying to check a Google Workspace user's availability, Microsoft Exchange or Exchange Online (Microsoft 365), users get an error message saying that the user is not found. Other Google Workspace user accounts work as expected | Ensure the custom contact created for the Google Workspace user in the Exchange or Exchange Online environment has mail turned on. |
Google Workspace users can check the availability of some Exchange users, but not others | Calendar Interop requires Exchange email addresses are not used by Google users (both as part of the Google Workspace domain or as a consumer account).
If availability (free/busy) lookups work for some accounts and not others, it's likely that there is an Exchange account in Google. Try the following corrective actions:
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Exchange users can't check the availability of Google Workspace users | Run a test with the user availability lookup tester. For details, go to Check availability using the tester. Then, check the error summary for troubleshooting information. |
Google Workspace users can't check the availability of Exchange users |
Run a test with the user availability lookup tester by entering an email address of an Exchange user. For details, go to Check availability using the tester. Check the error summary for troubleshooting information. If the test doesn't display an error, check the Google Calendar web interface for incorrect information. These are possible symptoms:
The most common cause for these symptoms is that a Google Workspace user has the Google Calendar service turned on. Check to make sure Google Calendar service is turned off for this user (even if it's a user in a different Google Workspace account). |
Event detail feature is turned on, but Exchange users only receive availability blocks of Google Workspace users |
Verify that your Google role account or accounts can access the required calendars and event details:
If you can't view details, you might be using an old Calendar Interop authentication setup, which only allows you to access availability data. To fix this, regenerate the Exchange credentials by following the steps 3–5 in Allow Exchange users to see Calendar availability data. |
Event detail feature is turned on, but Google Calendar users only get availability blocks of Exchange users |
Verify that your Exchange role account or accounts can access the required calendars and event details:
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