JNLP stands for Java Network Launching Protocol. The protocol specifies how to start Java Web Start. These file types contain information to the parameters of the program. Any computer program can use JNLP by installing Java Web Start. JNLP is similar to HTTP/HTML. This file type resembles the process of a web browser rendering a web page. The JNLP client does this to a Java application.
Java Web Start is an independent application that allows users to open software for the Java platform by using a web browser. Independent use means they run separately and not in the web browser itself.
In addition to the problem described above, i.e. the lack of the appropriate application to support the .JNLP file, there may be several reasons that cause problems with opening and operation of the data format:
A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .JNLP file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .JNLP file, so download the update and check again.
If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:
It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.
There may be several reasons why you cannot open the file with .JNLP extension. Directly on this website you can find a solution of the most common problem with the .JNLP file – that you do not have on your computer the appropriate program to open the file.