You might also have these similar questions:

• How can I install Lumion if my PC is low on free file space?
• How can I save space when downloading or installing Lumion?

You need a minimum amount of free file space to download and install Lumion.  There are some options to where you put the files.

1. About the files:

1.1: Required File Size and Space:

Current version: Lumion 2023:

• Download of the installation files: 29GB
• Installation: 75GB

Prior version: Lumion 12.5:

• Download of the installation files: 23GB
• Installation: 40GB

These are minimums.

1.2: Main File Types:

There are three main file types for an installation:

From Lumion 2023.0.0:

1. The Installer (includes both the downloader and the installer) - Lumion_[Major version_Minor version_Sub Minor version][Edition]_Download.exe.
   For example, Lumion_2023_0_Download.exe.
2. The Install files - Lumion_[Major version_Minor version_Sub Minor version][Edition]_Download.0XX.
   For example:  Lumion_2023_0_Download.000 through to Lumion_2023_0_Download.019.
3. The .cache file.  Lumion_2023_0_Download.cache.
   
   
4.  Lumion Updater for this version, see this article:

• • Knowledge Base:  How does the Updater for Lumion work?

From Lumion 12.3.0 and 12.5.0:

1. The Installer (includes both the downloader and the installer) - Lumion_[Major version_Minor version_Sub Minor version][Edition]_Download.exe.
   For example, Lumion_12_3_1_Download.exe.
2. The Install files - Lumion_[Major version_Minor version_Sub Minor version][Edition]_Download.0XX.
   For example:  Lumion_12_3_1_Download.000 through to Lumion_12_3_1_Download.016.
3. The .cache file.

Prior to Lumion 12.3:

1. The Download Manager - Lumion_[version]_Download.exe, for example: Lumion_12_0_Download.exe.
2. The Installer - Lumion_[version]_LUM[MajorVersion][Edition].exe: for example: Lumion_12_0_LUM12PRO.exe.
3. The Install files - Lumion_[version]_LUM[MajorVersion][Edition].BIN: for example:  Lumion_12_0_LUM12PRO-1a.bin.

1.3: Where are the Installer Files?

By default, the Download Manager - the first file you get when you click on the link in your Lumion Account is saved to the Windows 'Downloads' folder on C:\ (operating system) drive.  

Or some other location:

• If you have changed the default save location in your browser.
• Or you have created a different folder for the files to download to.

1.4: Where are the files Installed to?

The installer will create the application files and content in:

1. The default location of [install drive]\Program Files, usually C:\Program Files\Lumion [version].
2. At the time of installation, you can choose a different location (drive and folder).  Exception - unless the install is a full install for a hotfix update.
3. Our release article - Everything You Need to Know in the News Section will advise on the type of installation and where it will install to.

2. Free up File Space:

Here are some suggestions for freeing file space.  This applies to Lumion 12 and newer but also to older versions:

• Once you have successfully installed Lumion and checked that it can open OK, then you can safely delete the install files (see section 1.2: Main File Types), if you wish to.
• If you no longer require the prior version, then uninstall it using Windows Installed Apps.  If it is Lumion 12, then that will release about 37.2GB.
  If you have a License Key for an older version, you can always download it later on if needed from your Lumion Account.
• Download the Lumion Installer file to a different drive than C:\ drive.  The installation files will then be saved to that drive.
• If needed, you can install Lumion on any other drive.  Caution: if it is a removable drive then do not remove the drive when Lumion is open.

Also, follow the suggestions from the Microsoft Help website:

• • External Link: Free up drive space in Windows 10 and Windows 11

Important Note:

Your PC should always have at the very least 30GB (preferably 50GB +) of free file space on the C: drive after installing Lumion.  Windows requires 20GB free, Lumion and other 3D applications another 10GB.

You can always monitor free file space via Windows File Explorer or Windows 10 Disk Management.

Here are some other links to help find out where you are using file space:

• External Link:  WinDirStat
• External Link:  SpaceSniffer    

See Also:

For versions 12.3 and newer:

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

For versions prior to 12.3:

• Knowledge Base:  Why is the Download Manager not working?
• Knowledge Base:  How do you resolve installation problems?