To resolve the issue:

• For Apex One:
  1. Log off from the Apex One web console.
  2. Back up the existing Ofcscan.ini file located in the ...Program Files (x86)\Trend Micro\Apex One\PCCSRV\ folder on the Apex One installation directory.
  3. Open the Ofcscan.ini file using an editor such as Notepad ++.
  4. Add the following key under the INI_SERVER_SECTION section and set its value to "0":

     [INI_SERVER_SECTION]
     CheckDuplicateMachineName={x}

     Where "x":

     0 = allows Apex One clients/agents to move from one domain to another using the same computer name
     1 = (Default) prevents Apex One clients/agents from moving from one domain to another using the same computer name.

  5. Save the changes and close the file.
  6. Log on to the Apex One web console and open the Global Agent Settings.
  7. Hit Save for the new settings to take effect.
• For OfficeScan:
  1. Install at least Patch 4 for OSCE 10.5. For OSCE 11.0, make sure that the build is 1047 or higher and it is also recommended to apply Patch 1 build 1454.
  2. Log off from the OfficeScan web console.
  3. Open the Ofcscan.ini file in the ...\PCCSRV\ folder on the OfficeScan installation directory.
  4. Add the following key under the INI_SERVER_SECTION section and set its value to "0".
     [INI_SERVER_SECTION]
     CheckDuplicateMachineName={x}
     
     Where "x":
     
     0 = allows OfficeScan clients/agents to move from one domain to another using the same computer name
     
     1 = (Default) prevents OfficeScan clients/agents from moving from one domain to another using the same computer name
  5. Save the changes and close the file.
  6. Log on to the OfficeScan web console for the new settings to take effect.