Unable to set or update NodeJS Custom environment variables for any domain in Plesk: Server Error 404 Page Not Found

Gabriel Aznarez

Updated August 11, 2025 12:00

kb: bug Plesk for Linux kb: technical ext: nodejs

Applicable to:

An attempt to set or update the Node.js Custom environment variables under Domains > example.com > Node.js > Custom environment variables > Specify results in error:
Node.js Toolkit Extension version 2.4.2-3486 is installed on the server.

This is the NodeJS Toolkit Extension Bug EXTPLESK-9167: "all Node.js sites results in 404 if Custom environment variables are set".

Fixed in:

If update is not possible for some reason, try the following:

workaround

Log in to Plesk.
Go to Domains > example.com > Node.js > Custom environment variables > Specify
Manually modify the failing URL directly on the browser by appending /index.php as on the next example:

From:

https://192.168.100.10:8443/modules/nodejs/domain/environment/site_id/98 \

To:

https://192.168.100.10:8443/modules/nodejs/index.php/domain/environment/site_id/98
Hit Enter to navigate to the modified URL.