Here's how:

1. For Lumion 12.3 and newer:

1.1:  Download the Lumion Installer via your Lumion Account and then open/run the Installer.

• Knowledge Base: Download Lumion and Lumion Pro

1.2:  Enter if needed the Activation Code found in the Getting started with Lumion email or in your Lumion Account.   Please note that the License Key is embedded in the installation files, so you do not need to enter it anywhere during the installation.  However, the Activation Code is required for the download process.

1.3:  Wait for the Lumion installation files to be downloaded at the same location as the  Installer executable file.  Each file will have a file extension of '.0XX' for example '.000' through to '0.016'.

Continue with the following steps after all of the installation files have been downloaded.

1.4:  Type "cmd" (no quotes) in the Windows search field and press enter:

1.5:  Right-click on the Command Prompt application and click on Run as administrator:

1.6: In the Command Prompt window, go to the path where the installation files are located by typing cd /d <yourlumionpath> and pressing Enter. 

1.7:  Then enter the Installer file name (for example: Lumion_12_3_1_Download.exe) followed by any of the following parameters/commands.

• -s or --silent; silent installation.
• -e or --silentautoexit; auto continue after a silent installation has finished.
• -d or --silentinstalldir; custom installation directory. 
  
  

Examples of using the commands

1.7.1:  Silent installation in the default location 

`Lumion_12_3_1_Download.exe -s` or `Lumion_12_3_1_Download.exe --silent` 

This will perform a silent install in the default location `C:\Program Files\Lumion 12.3`.  When the installation is finished you need to press a key to continue.

1.7.2:  Auto-continue after silent installation 

`Lumion_12_3_1_Download.exe -s -e` or `Lumion_12_3_1_Download.exe --silent --silentautoexit` 

This will perform a silent install in the default location `C:\Program Files\Lumion 12.3`. When the installation is finished the installer will automatically exit.

1.7.3: Silent installation in a custom directory 

`Lumion_12_3_1_Download.exe -s -d “x:\custom”` or `Lumion_12_3_1_Download.exe --silent --silentinstalldir  “x:\custom”`  

This will perform a silent install in the custom location “x:\custom”.  Example:  "G:\Programs\Lumion 12.3.  When the installation is finished you need to press a key to continue.

Note: Error logging is On by default.  There is no command parameter needed.

1.8: Getting an error and not able to complete the Silent Mode install?

Please see this article:

• Knowledge Base:  How do you resolve Installer (v2) problems - Installation issues?

1.9: Uninstall silently:

You can also uninstall Lumion silently using similar parameters with the uninstall file 'uninstall000.exe' found in the install folder of Lumion.

For example:

1.9.1: In the Command Prompt window, go to the path where the installation files are located by typing cd /d <yourlumionpath> and pressing Enter.  Example: cd /d C:\Program Files\Lumion 12.3.

1.9.2:  Then enter the UnInstaller file name (example: 'uninstall000.exe') followed by any of the following parameters/commands.

• -s or --silent; silent installation.
• -e or --silentautoexit; auto exit after the silent uninstall silent has finished.

For example: for an auto-exit after silent uninstall: 

`uninstall000.exe -s -e` or `uninstall000.exe --silent --silentautoexit` 

Applies to Lumion 12.3.1 and the Installer version 2.40.3 when installed on or after 12 May 2022.

2. For Lumion 12.0.2 and older (InnoSetup):

2.1: Download the Lumion Download Manager via your Lumion Account and then run the Download Manager.  Enter the Activation Code from the email or your Lumion Account.

2.2: Wait for the Lumion installation files to be downloaded at the same location as the Download Manager executable file. Please note that the License Key is embedded in the installation files, so you do not need to enter it anywhere during the installation.

2.3: Type "cmd" (no quotes) in the Windows search field and press enter:

2.4: Right-click on the Command Prompt application and click on Run as administrator:

2.5: In the Command Prompt window, go to the path where your installation files are located by typing cd "<yourlumionpath>" (include quotes) and press Enter.

2.6: Install Lumion by entering the installer executable filename (in quotation marks "") + /VERYSILENT. You may also want to include the "/LOG" option:

2.7: Please click here to see a list of all the command line options for the installation, for example how to specify a target installation path that differs from the default path. Also, error logging and other options are available.