---
title: "Installing Trellix Agent 5.8.x on unmanaged Windows systems"
slug: "installing-trellix-agent-5-8-x-on-unmanaged-windows-systems-1"
updated: 2026-10-26T07:33:44Z
published: 2026-10-26T07:33:44Z
canonical: "docs.trellix.com/installing-trellix-agent-5-8-x-on-unmanaged-windows-systems-1"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trellix.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Installing Trellix Agent 5.8.x on unmanaged Windows systems

Install Trellix Agent 5.8.x on Windows systems that are not managed by ePO - On-prem using the *FramePkg_UPD.exe* installer. When Trellix Agent is installed in unmanaged mode, the DXL client is automatically installed and in an idle state.

You must have administrator rights to install Trellix Agent on the client system.

1. Download Trellix Agent installation package *MAxxxWIN.zip* for Windows from the Software Catalog on ePO - On-prem.
2. Extract the package to a temporary location and copy *FramePkg_UPD.exe* to the client system.
3. Right-click *FramePkg_UPD.exe* and select **Run as administrator**.

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