These steps cover the back-out procedure for the cloud-based Hybrid Calendar Service. If you deployed the Expressway-based Calendar Connector with Microsoft Exchange or Office 365, see the Microsoft Exchange steps. To back out a hybrid Exchange deployment with both types of service, do both sets of steps, in either order.

Before you begin

  • You must be the Global administrator for the Office 365 tenant or work with the administrator to complete the back-out process.

1

From the customer view in https://admin.webex.com, go to Services, and then click Edit settings on the Hybrid Calendar Office 365 card.

2

Scroll to the Deactivate section and click Deactivate.

3

Read the caution that appears, and then proceed if you're sure.

The service is no longer available to your organization and users no longer have access to its features.

4

Remove Webex cloud authorization from your Office 365 tenant:

  1. Sign in to the Azure Active Directory admin center, http://aad.portal.azure.com, with the Global administrator account.

  2. Click All services, then click Enterprise applications.

  3. In the application list, click Webex Calendar Service App.

  4. Under Manage, click Properties, then click Delete.

  5. Click Yes to confirm the deletion.

1

From the customer view in https://admin.webex.com, go to Services, and then click Edit settings on the Hybrid Calendar Google card.

2

Scroll to the Deactivate section and click Deactivate.

3

Read the caution that appears, and then proceed if you're sure.

The service is no longer available to your organization and users no longer have access to its features.

4

Remove Webex cloud access from your G Suite account:

  1. Sign in to https://admin.google.com, then go to > Security > Show more > Advanced settings.

  2. In the Authentication section, click Manage API client access.

  3. Locate the client that has Calendar (Read-Write) permissions, and click Remove.

By removing the Hybrid Calendar Service from your on-premises resources, you are not only removing user access to the features. You are also removing the related configuration from the Expressway connector host.

1

From the customer view in https://admin.webex.com, go to Services, and then click Edit settings on the Hybrid Calendar Microsoft Exchange card.

2

Scroll to the Deactivate section and click Deactivate.

3

Read the caution that appears, and then proceed if you're sure.

The service is no longer available to your organization, the configuration is deleted, and the Calendar Connector software is removed from your registered resources.

4

If you are no longer running any hybrid services on the Expressway connector host, deregister the resource from the Webex cloud:

  1. Go to Services, click View from the On-Premises Resources card, and then click settings from a resource name in the list.

  2. Scroll to Cluster, and then click Remove. After you read and understand the confirmation prompt and you're sure you want to proceed, click Confirm.

What to do next

Undo any changes that were made to your Microsoft Exchange (or Exchange Online) organization to run the Calendar Connector.

Use these steps as guidelines. Your exact steps may vary depending on your configuration and version of Microsoft Exchange. The examples use Exchange Management Shell commands and sample names that may not be applicable in your deployment.

Use these steps as guidelines to undo the changes that your organization made when deploying the Expressway-based Hybrid Calendar Service for Microsoft Exchange or Office 365. Your exact steps may vary depending on your configuration and version of Microsoft Exchange. The examples use Exchange Management Shell commands and sample names that may not be applicable in your deployment.

1

If you intend to retain any impersonation accounts that were created for the Calendar Connector and the accounts are not being used for other custom applications, do the following substeps for each account:

  1. If a custom throttling policy was created for the account, remove or adjust the policy. To do so, you can create a new throttling policy that is unlimited and associate it with the impersonation account, modify the existing custom throttling policy to be unlimited, or assign the impersonation account to the default throttling policy, as in the following example.

    Set-ThrottlingPolicyAssociation "impersonation account" -ThrottlingPolicy GlobalThrottlingPolicy_<GUID>

  2. Remove the application impersonation privileges from the account.

    Get-ManagementRoleAssignment -Role "ApplicationImpersonation" -RoleAssignee "impersonation account" | Remove-ManagementRoleAssignment -Confirm

    If you have set up an impersonation account for Office 365, use the Office 365 Admin Center to remove the account from the admin role group with the ApplicationImpersonation role.

2

If the custom throttling policy is not being used for other custom applications, and you did not modify it in step 1, remove it.

Remove-ThrottlingPolicy -Identity CalendarConnectorPolicy
3

If you do not need to retain any impersonation account that was created for the Calendar Connector, and the account is not being used for other custom applications, delete it.