---
title: "How to install ImunifyAV"
source: "https://docs.nexcess.com/hosting/security/antivirus/how-to-install-imunifyav/"
description: "Learn how to install ImunifyAV, a free malware scanner for Linux servers."
vertical: "Hosting"
date: "2025-06-02"
last_modified: "2026-07-30"
---

# How to install ImunifyAV

ImunifyAV is a free malware scanner plugin created by Cloudlinux. It simply helps to identify potential malware, but it does not remediate malware.

## cPanel installation

On the server where you want to install ImunifyAV, perform the following steps:

1. Log in to WHM as the `root` user or as a reseller account with `root`-level privileges.
2. Navigate to WHM’s *Security Advisor* interface (*WHM » Home » Security Center » Security Advisor*).
3. In the *Install ImunifyAV to scan your websites for malware* alert, click *Install ImunifyAV*.  
    **Important:** If the *ImunifyAV* alert does **not** appear in the list of security alerts, one of the following conditions exists on your server: 
    - Your server does **not** support ImunifyAV.
    - You are using a trial account.
    - You are **not** a `root` user or a reseller account with `root`-level privileges.
4. A new tab will open to show you the installation status. This installation may take a few minutes.
5. After the installation is complete, you will see a success message. You can either click ***Go back*** or close the tab.

You can access ImunifyAV from the *Plugins* interface (*WHM » Home » Plugins*).

## InterWorx installation

To install ImunifyAV on InterWorx servers, we recommend you following the [documentation within the InterWorx Appendix](https://appendix.interworx.com/current/nodeworx/plugins/install-use-immunify-plugin-interworx.html).

## Plesk installation

To install ImunifyAV antivirus for Plesk:

1. Go to Plesk extension page
2. Download the extension ImunifyAV **or** open Plesk panel admin page and install the extension right from your web hosting panel → Security → ImunifyAV

## How to update ImunifyAV

Servers with automatic updates enabled will update ImunifyAV automatically. However, you can always manually check if an update is available, or perform the update yourself if automatic updates have been disabled in favor of manual updates.

To upgrade ImunifyAV on CentOS, run the command:

```
yum update imunify-antivirus
```

To update ImunifyAV on Ubuntu/Debian, run the commands:

```
apt-get update
apt-get install --only-upgrade imunify-antivirus
```