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Installer logs

  • Published on Sep 7, 2026
  • 1 minute(s) read
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Installer log files list details about the ePO - On-prem installation process.

These logs provide information about:

  • Actions taken by specific components

  • Administrator services used by the server

  • Success and failure of critical processes

File name

Log type

Location

Description

AH5100-Install-MSI.log

Agent Handler installation

C:\ProgramData\McAfee\ePolicy Orchestrator

This file logs all Agent Handler installation details including:

  • Installer actions

  • Installation failures

AH5100-ahetupdll.log

Temporary

%temp% (on the Agent Handler server)

Logs Agent Handler back‑end events.

core-install.log

Temporary

%temp%\TrellixLogs\ePO5100-Troubleshoot\MFS

Generated when the installer calls the MFS ANT installer. Provides information about:

  • Creation of server database tables

  • Installation of server components

Note

This file is deleted if the installation succeeds.

epo-install.log

Installation

C:\ProgramData\McAfee\ePolicy Orchestrator

Created when the installer calls the ANT installer.

EPO5100-Checkin-Failure.log

Installation

C:\ProgramData\McAfee\ePolicy Orchestrator

Generated when installer fails to check in any of these package types:

  • Extensions

  • Plug-ins

  • Deployment packages

  • Agent packages

EPO5100-CommonSetup.log

Installation

C:\ProgramData\McAfee\ePolicy Orchestrator

Contains installer details such as:

  • Custom Action logging

  • SQL, DTS (Microsoft Data Transformation Services), and service-related calls

  • Registering and unregistering DLLs

  • Files and folders selected for deletion at restart

EPO5100-Install-MSI.log

Installation

C:\ProgramData\McAfee\ePolicy Orchestrator

The primary installation log. Contains installation details such as installer actions and installation failures.

<ExtensionFileName>.cmd

Temporary

%temp%\TrellixLogs\ePO5100-troubleshoot\OutputFiles

Created by the installer. Contains the command (sent to Remote‑Client) to check in extensions.

Note

If the installation succeeds, these files are deleted.

MFS5100-CommonSetup.log

Installation

C:\ProgramData\McAfee\ePolicy Orchestrator

Contains core functionality installer details.