# Microsoft Exchange Requirements

You must make sure the following prerequisites are met before setting up Nightfall DLP for Microsoft Exchange.

* You must have an active Microsoft Exchange Online subscription and Microsoft Tenant for your organization.&#x20;
* Microsoft Exchange subscription administrator credentials / login
* You may also require an authenticator app, like a [Microsoft Authenticator](https://support.microsoft.com/en-us/account-billing/download-and-install-the-microsoft-authenticator-app-351498fc-850a-45da-b7b6-27e523b8702a) app or an [Authy](https://authy.com) app,  in case you have enabled multi-factor authentication for your Microsoft Exchange.
* You need Azure admin credentials to setup Directory Sync (if not done previously while setting up [Nightfall for Microsoft 365](https://help.nightfall.ai/microsoft-365/getting_started)).&#x20;