Manage device access settings

If you're using Mobile Device Management (MDM) in Office 365, there may be devices that you can't manage by using MDM. If so, you should block Exchange ActiveSync app access to Office 365 email for mobile devices that are not supported by MDM for Office 365. This will help secure your organization's information across more devices.

To do this:

  1. Sign in to Office 365 with your global admin account.

  2. In your browser, type:

  3. Go to Data loss prevention > Device management > Device policies and select Manage organization-wide device access settings.

  4. Select Block.

    Manage device access - selecting Block
  5. Select Save.

    The save button on the Manage device access panel

To learn what devices MDM for Office 365 supports, see Capabilities of Mobile Device Management for Office 365.

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