topic Node.js for Running FlexSim Web Server Successfully in FlexSim Forum

Node.js for Running FlexSim Web Server Successfully

sakamoto_koUFFFM — Tue, 16 Dec 2025 09:39:51 GMT

Hi.

During the installation of FlexSim Web Server ver24.2, the Node.js installation did not function.

I recall that with ver22.2, installing the Web Server on a PC without Node.js installed automatically opened the Node.js installation screen.
I tested this on multiple PCs, and the same behavior occurred on all of them. Is this the intended behavior for ver24.2, or is it an environment-dependent issue?

Furthermore, based on the above behavior, I determined that Node.js must be installed manually on these PCs. Which version should I use?
Version 20.19.6 worked correctly in my environment, but please advise if another version is recommended. As a precaution, I also tried the latest LTS version, v24.12.0, but buttons and other elements did not display correctly.

Thank you for your response.

Re: Node.js for Running FlexSim Web Server Successfully

Jeanette_Fullmer — Wed, 17 Dec 2025 00:08:06 GMT

Hello @sakamoto_koUFFFM ,

The developers have been notified of the issue where node.js is not installing with the webserver installer.
You can install node.js by running the following in power shell:

winget install --accept-source-agreements OpenJS.NodeJS.20

Or download and install NodeJS v20.19.6 some other way.

Re: Node.js for Running FlexSim Web Server Successfully

sakamoto_koUFFFM — Wed, 17 Dec 2025 00:24:22 GMT

@Jeanette_Fullmer

Thank you for your reply!

I understood that Node.js version 20 is required for FlexSim Web Server ver24.2 to function properly.