1. Here's how

1.1:  Lumion 12.3 and newer versions, please see these articles for the updated (V2) Installer.  These articles cover things after the files have been downloaded.

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

For issues relating to downloading and saving the installer files see:

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

1.2: Lumion 9.0.2 through to Lumion 12.0.2. possible causes, refer to sections 2 to 4 below.

Please follow the instructions in the section that corresponds to the error message you are seeing when trying to install Lumion.

2. Possible cause: A previous Lumion installation was found

A previous Lumion installation with the same version number was found but could not be uninstalled, for example, Lumion Business Trial (Pro Trial).

2.1: To proceed, please uninstall the previous installation of Lumion before running the new Lumion installer again.

2.2: If the problem persists, please right-click on Lumion_(VERSION)_LUM(VERSION).exe which is located in the same location as the Lumion Download Manager, and select Run as administrator:

• Example: Lumion_11_0_1_LUM11PRO.exe

2.3: If this does not resolve the problem, please cite "installation error 1" when you request technical support:

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3. Possible cause: An installation file is missing or corrupted

3.1: If one or more files are missing or corrupted, please follow the instructions in the article below and run the Download Manager again:

• Knowledge Base: Why is the Download Manager not working?

3.2: If the problem persists, please send the items below to us:

• Write "installation error 2" in your email to us.
• Include a screen capture of the .BIN installation files with the file name and file size as shown below.

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Once we have received the above, we will be able to advise you on the next steps.

4. Possible cause: Unable to write files to the installation folder

Something is preventing the Lumion installer from writing the required files to the Lumion installation folder.

4.1: Please verify that there are at least 30 GB of free space on your C:\ (operating system) drive and the required free file space on the drive that you are installing Lumion on.  See this article for file space requirements:

• Knowledge Base:  What file space do I need to download and install Lumion?

4.2: Please add an exclusion for the Lumion installer in your anti-virus/security software. If you need help with this step, please contact the manufacturer of your anti-virus/security software.

4.3: Please add an exclusion for the Lumion installer in Windows Security:

• External Link: Add an exclusion to Windows Security

4.4: If the problem persists, please right-click on Lumion_(VERSION)_LUM(VERSION).exe which is located in the same location as the Lumion Download Manager and select Run as administrator:

• Example: Lumion_11_0_1_LUM11PRO.exe

4.5: If this does not resolve the problem, please cite "installation error 3" when you request technical support:

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