Sign In with your
Trend Micro Account
Need Help?
Need More Help?

Create a technical support case if you need further support.

"Vulnerability Protection Service: Unknown Error" is displayed on the console of Apex Central

    • Updated:
    • 20 Nov 2020
    • Product/Version:
    • Apex Central 2019
    • Apex One 2019
    • Vulnerability Protection All
    • Platform:

Some issue are experienced with the Vulnerability Protection Service, and the following can be observed:

  • On the Apex Central Console:

    Apex Central console

    • Policy shows "with issues" because Vulnerability Protection displays the "Unactivated License" error
    • Unable to deploy the license of Vulnerability Protection
  • On the Apex One agent console:
    • The Apex One Vulnerability Protection is disabled on the agent machine


  • The following can be seen in the ivp_server0 log gile located at …\Trend Micro\Apex One\iServiceSrv\iVP folder
    Aug 09, 2019 1:39:36 PM com.trendmicro.ivp.core.Core main
    SEVERE: Failed to start iVP server. The server [apex one servername] is not configured to listen with TCP/IP.

Based on the log file, the communication via TCP/IP is disabled. This prevents Vulnerability Protection from starting because it cannot connect to the SQL Server.


To fix the issue, perform the steps below:

  1. On the Apex One Server, navigate to the SQL server.
  2. Enable TCP/IP. Do the following:
    1. Open SQL Server Configuration Manager > [designated SQL Server Network Configuration for apex one] > Client Protocols > TCP/IP.
    2. Double-click TCP/IP. This will open the TCP/IP Properties window.
    3. Click on the dropdown for "Enabled", and choose Yes.
    4. Click OK.

    SQL Server Manager

  3. Restart the following services:
    • SQL Browser Service
    • SQL Service for Apex One
    • Apex One Master Service
    • Trend Micro Apex Central Service

To confirm that the issue is resolved, do the following:

  • Login to the Apex Central console, and navigate to Administration > License Management > Managed Products.
    Vulnerability protection will now be shown as successfully deployed.

    Activated Products

    The Activated Products column will display a number to indicate the successful license deployment for the designated product.
  • Redeploying the policy from Apex Central will no longer encounter any problems.
  • Vulnerability Protection service is enabled on the agent machine.
Solution Id:
Did this article help you?

Thank you for your feedback!

*This form is automated system. General questions, technical, sales, and product-related issues submitted through this form will not be answered.

If you need additional help, you may try to contact the support team. Contact Support

To help us improve the quality of this article, please leave your email here so we can clarify further your feedback, if neccessary:
We will not send you spam or share your email address.

*This form is automated system. General questions, technical, sales, and product-related issues submitted through this form will not be answered.