# Registering Exchange Online with Azure

You must register the Azure app with Azure Active Directory (AD).

Important

You can perform the registration manually, as described in this topic, or you can use the custom configuration toolkit, which is available in the custom configuration option and which automates the registration process.

Configure one Azure app per 1000 users up to a maximum of 10 Azure apps. Configuring the recommended number of Azure apps and disabling throttling for Exchange Online will deliver the best possible throughput when performing an initial full backup.

Note

Disclaimer: This procedure is performed using the Azure Active Directory web application. The Azure AD application is subject to change without notice. Consult Microsoft documentation, such as Azure Active Directory Documentation.

#### Log On to the Azure Portal as the Global Administrator

1. Log on to the Azure portal (https://portal.azure.com/) using your global administrator account.

2. Go to Azure Active Directory.

#### Register Exchange Online in the Azure Portal

1. In the navigation pane, click App registrations.

   The App registrations page appears.

2. Click New registration.

   The Register an application screen appears.

3. In the Name box, type a name for the app.

4. Under Supported account types, select Accounts in this organizational directory only (tenant_prefix - Single tenant).

5. To verify the status of the app and to authorize the app from the Command Center, under Redirect URI, enter the Command Center URL.

   For example, enter https://host_name.domainname.com/commandcenter.

6. Click Register.

7. Copy and paste the following values in a document that you can access later:

   - Application ID

   - Directory ID

   You will enter these values in the Commvault software when you complete the Microsoft 365 service catalog.

#### Request and Grant Permissions for Azure APIs for Azure Apps

1. In the navigation pane, click API permissions.

2. Click Add a permission.

3. Click Microsoft Graph and complete the following steps:

   1. Click Application permissions.

   2. Select the following permissions:

      - Directory: Directory.Read.All

      - Group: Group.ReadWrite.All

      - Application: Application.ReadWrite.All

   3. Click Add permissions.

4. On the app API permissions page, click Add a permission.

5. Click APIs my organization uses and complete the following steps:

   1. On the search bar, type Office 365 Exchange Online.

   2. Select Office 365 Exchange Online, and then click Application permissions.

   3. Select full_access_as_app.

   4. Click Add permissions.

6. On the app API permissions page, click Grant admin consent for tenant_name.

#### Create a Client Secret

1. In the navigation pane, click Certificates & secrets.

   The Certificates & secrets page appears.

2. Click New client secret.

   The Add a client secret dialog box appears.

3. Enter a description, and then select the maximum value.

4. Click Add.

5. Copy and paste the client secret value in a document that you can access later.

   You will enter this value in the Command Center when you complete the Microsoft 365 service catalog.

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