# Can't Setup Device — Error During Fully Managed Mode (Previously Device Owner) or Admin Enrollment

Last updated: July 24, 2026

## Problem

When attempting to enroll an Android 9.0 or above device as a work device in Fully Managed mode (previously Device Owner mode), the error message **“Can't setup device”** may appear, preventing successful enrollment.

## Cause

The error may occur due to one of the following reasons:

- Wi-Fi connectivity issue
- Firewall or proxy blocking.

## Resolution

### 1. Check Wi-Fi Connection

- Try connecting the device to a different Wi-Fi network or use a mobile hotspot.
- If the issue is resolved, the problem was with the original Wi-Fi network.

### 2. Verify Firewall/Proxy Settings

- Ensure that the required ManageEngine MDM domains and ports are allowed in your firewall or proxy.
- Refer to the list of required network exceptions [here](https://manageengine.com/mobile-device-management/faq.html?help#g1).

After confirming connectivity and firewall settings, retry the enrollment process.

**Note:** If the problem persists, contact [mdm-support@manageengine.com](mailto:mdm-support@manageengine.com) (MDM On-Premises) or [mdmcloud-support@manageengine.com](mailto:mdmcloud-support@manageengine.com) (MDM Cloud).