Views:

To resolve this issue:

  1. Remove ATAS.
    • Option 1: Using iATASSetup Utility
      1. After applying the hot fix / critical patch on the Apex One server, launch a command prompt with administrator privilege and navigate to ...\TrendMicro\OfficeScan\PCCSRV\Admin\Utility\iServicePackage\iATAS\Setup\.
      2. Run the following command:

        iATASSetup.exe -uninstallation

        Take note that this command only works after applying Hot Fix Build 1141 or later on Apex One.
    • Option 2: Manual Uninstallation
      1. Stop the Trend Micro Advanced Threat Assessment Service (or just simply run "sc stop AtasService" command).
      2. Launch the Command Prompt as administrator and execute the following command to delete iATAS service:

        sc delete AtasService

      3. Open the Registry Editor and delete the hive, HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\TrendMicro\iATAS
      4. Open IIS Manager and delete the iATAS server instance (in the following order):

        officescan_iatas virtual directory
        OfficeScan_iATAS_AppPool

      5. Navigate to the Apex One directory and delete the iATAS program installation folder ...\Trend Micro\Apex One\iServiceSrv\iATAS\.
  2. Reinstall Apex One Endpoint Sensor
    1. Launch Trend Micro Apex One Installer Maintenance Mode.
    2. Select "Install Endpoint Sensor".

For further details, refer to the article on How to install the Apex One Endpoint Sensor after the user has installed Apex One .