This article describes how to manually install the agent on a Windows device (we also have installation guides for macOS and Linux).

• Search for the relevant .msi installer file:

Older version of Windows: NessusAgent-X.X.X-Win32.msi

• Download it and take a note of where it's saved (this is important later)

Step 2: Calculate the DeviceName

Open the Targets page > Add Targets > Internal targets

Click 'View configuration keys'

Copy the Prefix

(what you'd like the target to be named in the portal).

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DeviceName = Prefix_TargetName (eg. DQEGBQUAAAc_paul-laptop).

Step 3: Install and link the agent

Once you have the above information ready:

• Open a Command Prompt (cmd.exe) as Administrator

• Run the following command, making sure to update:

• The Key (see above)

• The DeviceName (see above)

``msiexec /i "C:\Users\[your name]\downloads\NessusAgent-7.5.1-x64.msi" NESSUS_SERVER="cloud.tenable.com:443" NESSUS_KEY=Key NESSUS_NAME=DeviceName /qn``

or

alternatively you can streamline the process by automatically populating half of the DeviceName using your machine's existing name. To do this:

• Open a Command Prompt (cmd.exe) as Administrator

• Run the following command, making sure to update:

``msiexec /i "C:\Users\[your name]\downloads\NessusAgent-8.2.4-x64.msi" NESSUS_SERVER="cloud.tenable.com:443" NESSUS_KEY=KEY NESSUS_NAME=Your Prefix_%computername% /qn``