NI has a couple of different Web Servers that work with different products and cover different use cases. They have very similar names, which may be used interchangeably, but each provides a different function. Use this guide to determine which Web Server you are using, and how to configure it.
Description: The NI Application Web Server loads Web Service applications which are deployed using LabVIEW. Stopping this service may cause deployed Web Service applications to become unavailable.
Startup type: Automatic
Command line: "C:\Program Files\National Instruments\Shared\NI WebServer\ApplicationWebServer.exe" -user
This is the standard Web Service that comes with most LabVIEW versions (up to 2019) and can be created from a project or an installer. This server can be configured using 2 different ways.
Web Server Page
Description: The NI System Web Server provides NI Web Services and Web-based configuration and Monitoring utility. Stopping this service may cause some NI software to not function properly.
Command line: "C:\Program Files\National Instruments\Shared\NI WebServer\SystemWebServer.exe" -system
System Web Server is for internal web services, you should not need to mess with this service. This is the older Appweb-based NI Web Server that hosts a Silverlight based web interface.It can be installed on Windows and Linux Real-Time targets.
Description: The NI Web Server hosts web applications and web UIs. Stopping this service may disable functionality in some NI software.
Command line: "C:\Program Files\National Instruments\Shared\Web Server\httpd.exe" -k runservice
The NI Web Server is the newer Apache-based Web Server that can be used for hosting SystemLink web interfaces and is shipped with NXG. This will be the default for LabVIEW starting in 2020. This Web Service is meant to replace the aging Application Web Server and System Web Server.This Web Server can configured using the NI Web Server Configuration.
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A valid service agreement may be required, and support options vary by country.