# 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. * 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)). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.nightfall.ai/microsoft-exchange/getting_started/requirements.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.