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DLP Agent install failed with x64otlrdm.dll failed to register


Article ID: 171748


Updated On:


Data Loss Prevention Endpoint Prevent


When trying to install the Symantec Data Loss Prevention (DLP) Prevention agent the listed error message is displayed in the installagent.msi log file.

MSI (s) (50:44) [15:30:08:639]: Executing op: RegSelfReg(File=x64otlrdm.dll,FileID=x64otlrdm.dll)
CustomAction +x64otlrdm.dll returned actual error code -1073740791 (note this may not be 100% accurate if translation happened inside sandbox)
MSI (s) (50:44) [15:30:09:289]: Product: AgentInstall64_15_0 -- Error 1904.Module C:\Program Files\Manufacturer\Endpoint Agent\x64otlrdm.dll failed to register.  HRESULT -1073740791.  Contact your support personnel.


  • DLP 14.x


  • The issue was resolved by uninstalling outlook then installing the DLP agent.
  • We believe that this issue might be a conflict with the version of outlook from early 2018.