"SCEP Server Returned an Invalid Response" Error on iPhone/iPad

If you receive the error "The SCEP server returned an invalid response" while installing the Northwestern eduroam configuration profile on an iPhone or iPad, follow the steps below.

Prerequisites

• Ensure the device is connected to cellular data during enrollment.
• Do not use eduroam or another Northwestern Wi-Fi network while completing these steps.

Step 1: Remove Existing Northwestern Profiles and Certificates

1. Open Settings.
2. Navigate to General → VPN & Device Management.
3. Remove any existing Northwestern-related profiles, including:
   • Previous Northwestern profiles
   • Old SecureW2 profiles
   • Existing eduroam certificates

Step 2: Clear Safari Session Data

1. Close all open Safari tabs.
2. Open Settings → Safari.
3. Tap Clear History and Website Data.

This removes stale authentication sessions that can interfere with certificate enrollment.

Step 3: Restart the Enrollment Process

1. Using Safari, browse to the Northwestern Network Configuration portal:
   • Northwestern Network Configuration Portal
2. Select Configure this device.
3. Follow the enrollment prompts to install the new configuration profile and certificate.