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To resolve the issue, delete the corrupted files from the failed installation.

  1. Stop the following services:
    • Apex One Master Service (ofcservice)
    • Apex One Plug-in Manager (OfcAoSMgr)
    • IIS Admin
  2. Make sure that the following server-side update paths are not updated temporarily (the directory is empty).
    C:\Program Files (x86)\Trend Micro\Apex One\PCCSRV\Web\Service\AU_Data\AU_Temp
  3. If the files are already downloaded, the button will change to "Install", change the following registry to return the button back to "Download":
    HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\TrendMicro\OfficeScan\service\Aos\OSCE_ADDON_DLP\1_1_1.0.1045
    Status=1
     
    Always back up the whole registry before making any modifications. Incorrect changes to the registry can cause serious system problems.
     
  4. Backup and delete the following files inside "C:\Program Files (x86)\Trend Micro\Apex One\PCCSRV\Download\Product\osce14\enu":
    • AddonSvcDLP.zip
    • AddonSvcDLP.sig
    • DLPPatchAgent.zip
    • DLPPatchAgent.sig
  5. Start the services from Step 1.
  6. Download and install the DLP Plugin from the Plug-in Manager.

If the issue persists, contact Trend Micro Technical Support.