1. [Enroll](./Adding-hosts.md) your hosts to Fleet with [Fleetd and Fleet Desktop](https://fleetdm.com/docs/using-fleet/adding-hosts#including-fleet-desktop)
2. Ensure your end users have access to an admin account on their Mac. End users won't be able to migrate on their own if they have a standard account.
3. In your old MDM solution, unenroll the hosts to be migrated. MacOS does not allow multiple MDMs to be installed at once.
4. Send [these guided instructions](#instructions-for-end-users) to your end users to complete the final few steps via Fleet Desktop.
* Note that there will be a gap in MDM coverage between when the host is unenrolled from the old MDM and when the host turns on MDM in Fleet.
2. [Enroll](./Adding-hosts.md) your hosts to Fleet with [Fleetd and Fleet Desktop](https://fleetdm.com/docs/using-fleet/adding-hosts#including-fleet-desktop)
3. Ensure your end users have access to an admin account on their Mac. End users won't be able to migrate on their own if they have a standard account.
4. Migrate your hosts to Fleet in ABM:
1. In ABM, unassign the existing hosts' MDM server from the old MDM solution: In ABM, select **Devices** and then select **All Devices**. Then, select **Edit** next to **Edit MDM Server**, select **Unassign from the current MDM**, and select **Continue**.
2. In ABM, assign these hosts' MDM server to Fleet: In ABM, select **Devices** and then select **All Devices**. Then, select **Edit** next to **Edit MDM Server**, select **Assign to the following MDM:**, select your Fleet server in the dropdown, and select **Continue**.
5. In your old MDM solution, unenroll the hosts to be migrated. MacOS does not allow multiple MDMs to be installed at once.
6. Send [these guided instructions](#instructions-for-end-users) to your end users to complete the final few steps via Fleet Desktop.
* Note that there will be a gap in MDM coverage between when the host is unenrolled from the old MDM and when the host turns on MDM in Fleet.
When migrating from a previous MDM, end users need to take action to escrow FileVault keys to Fleet. The **My device** page in Fleet Desktop will present users with instructions to reset their key.
If your old MDM solution did not enforce disk encryption, the end user will need to restart or log out of the host.
If your old MDM solution did enforce disk encryption, the end user will need to reset their disk encryption key by following the prompt on the My device page and inputting their password.
If a host under the old MDM solution has Activation Lock enabled, we recommend asking the end user to follow these instructions to disable Activation Lock before migrating this host to Fleet: https://support.apple.com/en-us/HT208987.
However, Activation Lock bypass codes can only be retrieved from the Mac up to 30 days after the device is enrolled. This means that when migrating from your old MDM solution, it’s likely that you’ll be unable to retrieve the Activation Lock bypass code.
To enforce the same settings on your macOS hosts in Fleet as you did using your old MDM solution, you can migrate these settings to Fleet to reduce manual work.
* If it does not export settings, you will need to re-create the configuration profiles. Learn how to do that [here](./MDM-custom-macOS-settings.md#step-1-create-a-configuration-profile)
Your organization uses Fleet to check if all devices meet its security policies.
Fleet includes device management features (called “MDM”) that allow your IT team to change settings remotely on your Mac. This lets your organization keep your Mac up to date so you don’t have to.
Want to know what your organization can see? Read about [transparency](https://fleetdm.com/transparency).
### How to turn on MDM:
1. Select the Fleet icon in your menu bar and select **My device**.
1. If your device is enrolled in Apple Business Manager (ABM) and assigned to the Fleet server, the end user will receive a "Device Enrollment: <organization> can automatically configure your Mac." system notification within the macOS Notifications Center.
2. After the end user clicks on the system notification, macOS will open the "Profiles" System Setting and ask the user to "Allow Device Enrollment: <organization> can automatically configure your Mac based on settings provided by your System Administrator."
3. If the end user does not Allow the setting, the system notification will continue to nag the end user until the setting has been allowed.
4. Once this setting has been approved, the MDM enrollment profile cannot be removed by the end user.
#### Manual Enrollment
1. If your device is not enrolled in Apple Business Manager (ABM), the end user will be given the option to manually download the MDM enrollment profile.
2. Once downloaded, the user will receive a system notification that the Device Enrollment profile has been needs to be installed in the System Settings > Profiles section.
1. Select the Fleet icon in your menu bar and select **My device**.
- If you don’t see the yellow banner, select the purple **Refetch** button at the top of the page.
- If you still don't see the yellow banner after a couple minutes or if the **My device** page presents you with an error, please contact your IT administrator.
<imgwidth="1399"alt="My device page - turn on disk encryption"src="https://user-images.githubusercontent.com/5359586/229950451-cfcd2314-a993-48db-aecf-11aac576d297.png">
