How do I enable Exchange ActiveSync in Office 365?

Enabling Exchange ActiveSync for Office 365 Users

Microsoft Exchange ActiveSync (EAS) is a protocol that allows mobile devices to synchronize calendar, contact, email, and task data with an Exchange server. This article provides step-by-step instructions on how to enable EAS for Office 365 users.

Method 1: Using the Exchange Admin Center

1. Sign in to the Office 365 portal (https://www.office.com/office365) as an administrator.
2. Navigate to the Exchange Admin Center by clicking on “Admin” in the Office 365 app launcher.
3. Click on the “Mobile” tab.
4. Under “Mobile Device Access,” click on “Device Access Rules.”
5. Click on the “+” icon to create a new rule.
6. Name the rule, select “Exchange ActiveSync devices,” and click on “Save.”

Method 2: Using the Recipient Properties Page

1. Navigate to the Exchange Admin Center as described in Method 1.
2. Click on the “Recipients” tab.
3. Select the user mailbox you want to enable EAS for.
4. Click on “Edit” in the ribbon.
5. Scroll down to the “Mobile Devices” section.
6. Check the “Enable Exchange ActiveSync” checkbox.
7. Click on “Save.”

Additional Notes:

• EAS can be enabled for both internal and external users.
• You can also configure device access restrictions, such as limiting the number of devices that can connect or blocking access from specific devices.
• Once EAS is enabled, users can set up their mobile devices to connect to their Office 365 mailboxes using the EAS protocol.

By following these steps, you can successfully enable Exchange ActiveSync for your Office 365 users, allowing them to stay connected and access their email, calendar, and other data from their mobile devices.