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DIALux 4.13.0.2 is the final legacy version of the DIALux lighting design software. While DIAL GmbH (the developer) has officially discontinued support and removed it from their official download page in favor of DIALux evo , it remains popular for specific tasks like sports lighting emergency lighting

DIALux was first released in 1994, developed by DIAL GmbH in Lüdenscheid, Germany. Over the years, the program evolved through numerous iterations, with DIALux 4.13 representing one of the last major releases in the classic version lineage before the company shifted focus to DIALux evo. The software works with luminaire data provided by virtually all major lighting manufacturers, making it an indispensable tool for lighting designers, architects, electrical engineers, and students worldwide.

Because Dialux 4 is legacy software, you might encounter minor graphical glitches or permission errors on modern operating systems like Windows 10 or Windows 11. Use these optimization tweaks to ensure stability:

Lighting manufacturers often provide DIALux training materials specific to their products. Companies like Philips Lighting provide plug-ins and configuration tools for DIALux and Relux. TRILUX also offers support for both DIALux and Relux software.

Since the official site no longer hosts it, you must use third-party repositories or community links. Community Links : Users often share Google Drive links within the DIALux Community forums Software Repositories : Sites like UpdateStar

If you have successfully completed the Dialux 4.13.0.2 download but the software crashes or looks wrong, try these solutions:

Multiple platforms offer structured courses for DIALux 4.13:

Why would a lighting designer in 2025 or 2026 want this software? Because of these core features:

DIALux evo is the more modern and advanced version of DIALux, featuring a powerful interface and the ability to work with complete buildings in 3D. It offers more realistic simulations, faster calculations, and BIM integration.


Senior Software Engineer at Software Medico. Interested in programming since he was 14 years old, Carlos is a self-taught programmer and founder and author of most of the articles at Our Code World.

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