> For the complete documentation index, see [llms.txt](https://calcom.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://calcom.gitbook.io/docs/introduction/quick-start/self-hosting/install-apps/microsoft.md).

# Microsoft

#### Obtaining Microsoft Graph Client ID and Secret

1. Open [Azure App Registration](https://portal.azure.com/#blade/Microsoft_AAD_IAM/ActiveDirectoryMenuBlade/RegisteredApps) and select New registration
2. Name your application
3. Set **Who can use this application or access this API?** to **Accounts in any organizational directory (Any Azure AD directory - Multitenant)**
4. Set the **Web** redirect URI to `<Cal.com URL>/api/integrations/office365calendar/callback` replacing Cal.com URL with the URI at which your application runs.
5. Use **Application (client) ID** as the **MS\_GRAPH\_CLIENT\_ID** attribute value in .env
6. Click **Certificates & secrets** create a new client secret and use the value as the **MS\_GRAPH\_CLIENT\_SECRET** attribute