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Difficulty: MediumTroubleshooting Mobile OS Security and Connectivity Issues

A mobile systems administrator is troubleshooting several corporate smartphones that lost access to internal email and secure corporate Wi-Fi following a server infrastructure update. Diagnostics show that the devices have an untrusted payload status because the push management certificate expired, preventing profile updates from applying. Which TWO of the following actions should the administrator take to resolve the management failure and restore secure connectivity?

  1. Renew the management push notification and identity certificate on the EMM server.Answer
  2. Import the updated corporate root CA trust profile or re-enroll the affected mobile devices.Answer
  3. C
    Report a network infrastructure outage to the mobile cellular service provider.
  4. D
    Instruct users to disable SSL/TLS certificate warnings in their mobile web browser settings.
  5. E
    Perform a full factory reset on all affected devices to re-flash cellular modem firmware.

Answer

The administrator must renew the expired push management certificate on the server and re-enroll the devices or push the updated corporate root CA trust profile to re-establish secure management channels.
Restoring mobile management functionality after a certificate trust breakdown requires renewing the server's push notification certificate to enable communication, combined with deploying the updated root CA trust profile or re-enrolling devices to establish valid credential chains.

Step-by-Step Solution

1
Identify the cause of the profile deployment failure.
The device logs confirm an expired EMM push certificate and missing CA trust chain.
MDM/EMM platforms require valid certificates to maintain push notification channels and sign configuration profiles.
2
Renew the server-side push notification and identity certificate on the EMM portal.
Management communication between the EMM server and mobile devices is restored.
Push services rely on active vendor certificates (such as APNs or FCM) to deliver security policies.
3
Update the root CA certificate profile or re-enroll the affected devices.
Devices accept the updated security payload and re-establish secure Wi-Fi and email connections.
Client devices require a trusted CA anchor to validate corporate network services without SSL errors.

Key Concept

Mobile Device Certificate Management and EMM Trust Profiles
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Topics

Troubleshooting Mobile OS Security and Connectivity Issues

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