--- title: Setting Up Office 365 Integration  description: How to set up Office 365 email/calendar integration/sync for the first time by obtaining a Secret from the Entra portal. --- [Skip to content](https://knowledgehub.endtoendit.com/knowledgebase/office-365-integration-setup#main-content) [![integrate knowledge base](https://knowledgehub.endtoendit.com/hs-fs/hubfs/integrate%20knowledge%20base.jpg?width=386&height=34&name=integrate%20knowledge%20base.jpg)](https://knowledgehub.endtoendit.com/knowledgebase?hsLang=en) Open main navigation Close main navigation - [endtoendit.com](https://endtoendit.com/) [endtoendit.com](https://endtoendit.com/) Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [integrate Support Team Knowledge Base](https://knowledgehub.endtoendit.com/knowledgebase?hsLang=en) 2. [Technical Support](https://knowledgehub.endtoendit.com/knowledgebase/technical-support?hsLang=en) 3. [integrate Integrations](https://knowledgehub.endtoendit.com/knowledgebase/technical-support?hsLang=en#integrate-integrations) # Setting Up Office 365 Integration ## How to configure the API link between integrate and Microsoft 365 ***Note:** This guide is intended for the EndtoEnd Support Team or external managed Service Providers (MSPs), but the steps can be performed by anyone with Entra portal access.* ### **Key Points: Setting Up Office 365 Integration** **1. Access Entra portal** Login to the client's Microsoft account at [https://entra.microsoft.com.](https://entra.microsoft.com) **2. Access app registrations** On the Entra main dashboard, navigate to **identity**, select **applications**, then **app registrations**. ![](https://knowledgehub.endtoendit.com/hs-fs/hubfs/image-png-Jun-05-2025-01-13-19-9283-PM.png?width=258&height=729&name=image-png-Jun-05-2025-01-13-19-9283-PM.png) **3.** Click **new registration**.  ![](https://knowledgehub.endtoendit.com/hs-fs/hubfs/image-png-Jun-05-2025-01-15-45-4911-PM.png?width=670&height=103&name=image-png-Jun-05-2025-01-15-45-4911-PM.png) **4. Register an application** Complete details as below. The **redirect URI** should be in the format below, where \[domain\] is the client's integrate domain.: **https://\[domain\]/General/Response\_OAuth2** An extra redirect URI should be added for each subdomain that needs access to email integration. Click **register**. ![](https://knowledgehub.endtoendit.com/hs-fs/hubfs/image-png-Jun-05-2025-01-19-07-8283-PM.png?width=670&height=638&name=image-png-Jun-05-2025-01-19-07-8283-PM.png) **5. Complete the new secret** On the newly created app, click **certificates & secrets**, then **new client secret**. Add a **description**, then set the **expiration period** to the longest possible (24 months), click **add**. ![](https://knowledgehub.endtoendit.com/hs-fs/hubfs/image-png-Jun-05-2025-01-24-52-1384-PM.png?width=579&height=859&name=image-png-Jun-05-2025-01-24-52-1384-PM.png) **6. Copy the secret value** Copy the **secret value**, not the secret ID, paste somewhere safe. The correct value will always contain a **~** symbol.  ![](https://knowledgehub.endtoendit.com/hs-fs/hubfs/image-png-Jun-05-2025-01-27-07-2703-PM.png?width=670&height=351&name=image-png-Jun-05-2025-01-27-07-2703-PM.png) **7. Copy IDs** From the **overview** page, copy the **application** (client) ID and **directory** (tenant) ID.  ![](https://knowledgehub.endtoendit.com/hs-fs/hubfs/image-png-Jun-05-2025-01-28-36-6776-PM.png?width=670&height=369&name=image-png-Jun-05-2025-01-28-36-6776-PM.png) **8\. Submit IDs** Within the client's integrate system, navgate to /Settings/SystemManagement/Secret. Paste the client ID, secret and Tenant ID under 365 Graph Secret. If the client has suborganisations, repeat the process for each one. ***Note:** MSPs please email the three values to support@endtoendit.com.*  ![](https://knowledgehub.endtoendit.com/hs-fs/hubfs/image-png-Jun-05-2025-01-29-50-6530-PM.png?width=670&height=256&name=image-png-Jun-05-2025-01-29-50-6530-PM.png)   **9. Test the connection** Request the user to navigate to **my profile**, then **mailbox,** then **check connection**. The user will be prompted to sign in to their Microsoft account, and grant permission to the application. **10. 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