iOS 13: communication issues with Trend Micro Mobile Security

[German]A brief information for users of Trend Micro Mobile Security (TMMS), using iOS devices. There may be communication issues after upgrading to iOS 13, and Trend Micro has issued an advisory on this topic to avoid these issues.


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German blog reader Thomas B. has send me the details a few day ago – thanks for that. Here is the Trend Micro advisory.

[TMMS] Resolving communication issues after upgrading mobile devices to iOS 13

Due to new security requirements announced from Apple, Trend Micro Mobile Security (TMMS) users utilizing a Local Communication Server (LCS) and a self-signed certificate must apply this patch and perform their certificate deployment as instructed in this KB before upgrading their mobile device to iOS 13. If a mobile device is upgraded to iOS 13 before applying the patch and performing the instructed certificate deployment, the user will need to re-deploy the TMMS iOS App again.

Technical Detail

Without a complying certificate, iOS 13 mobile devices will not be able to access the Transport Layer Security (TLS) server, install apps, or access websites in their Safari web browser. Details are available at Apples website here.


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Impact Scope

These security requirements will impact the customers who are:

  • using TMMS Full Version Deployment Mode
  • using a Local Communication Server (LCS) and a self-signed certificate
  • enrolled iOS 12 or earlier mobile devices

Customer Impact

The possible impact that updated security requirements will cause:

  • All currently enrolled iOS 13 mobile devices that were upgraded from iOS 12 or a lower version, will not be able to access the LCS anymore. Such mobile devices need to be re-enrolled after implementing the new security requirements.
  • New iOS 13 mobile devices will not be able to enroll to LCS.

How to Solve this issue: Install  TMMS 9.8 SP2 Patch 1, by following the installation and deployment procedure found  here.


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1 Response to iOS 13: communication issues with Trend Micro Mobile Security

  1. Facebook says:

    There is some problem that arises after update Ios 13. This is a new update for Ios. In this update, there have some bugs. In the next update, the bugs will be repaired.

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