FIX: Java Installation Not Completed – Unable to open JAVA .JNLP files (Solved)

If you cannot open .JNLP Java files on a Windows 10, 8 or 7 based computer, with error “Java Installation Not Completed. Unable to install Java. There are error in the following switches: file.jnlp“, continue reading below.

The error “There are errors in the following switches” while trying to open a JAVA .JNLP file usually occurs because of the invalid association of the default program that can open .JNLP files.

This tutorial contains instructions to fix the following Java error while trying to open a .jnlp file:

“Java Installation Not Completed.
Unable to install Java. There are error in the following switches: ‘C:Users…file.jnlp’;.
Check that the commands are valid and try again.”

Related article: FIX Java Installation Not Completed – Unable to install Java in JAVA JAR files.

How to FIX: Unable to Open Java JNLP Files – There are errors in the following switches: ‘file.jnlp’.

Method 1. Uninstall and re-Install JAVA on your system.

The first step, to resolve problems with JAVA, is to uninstall and re-install the correct and most recent version of JAVA on your PC. To do that:

1. Download and run the Java Uninstall tool.
2. Choose Agree at the first screen. *

* Note: If prompted that “There is only one up-to-date Java version detected. Are you sure to continue?” click Yes.

3. Select all the installed Java versions and click Next.

4. Click Yes again to clean the cache

5. When the uninstall is completed, click the Get Java button or navigate to Java Download page to download and install the latest Java version.*

* Note: If you use 32-bit and 64-bit browsers, you will need to install both 32-bit and 64-bit Java in order to have the Java plug-in for both browsers. You can download both Java versions from here.

6. After installing Java on your system, try to open the JNLP file again and if you still face the same error, apply the instructions at method-2 below.

Method 2. Set “JAVA Web Launcher” as the Default program to Open .JNLP files.

1. Right-click on the Java .jnlp file and choose Open with…

2. Check Always use this app to open .jnlp files and click More apps

3. Scroll down and click Look for another app in this PC.

4. Now navigate to the folder where JAVA is installed.

• For 64-bit versions of Java navigate to C:Program FilesJavajre_versionbin
• For 32-bit versions of Java navigate to C:Program Files(x86)Javajre_versionbin

5. Select the “javaws.e” application (Java Web Start) Java Web Launcher) and click Open.

6. That’s it! From now on you should open the all the JAVA .JNLP files without problems. *

* Note: If you still face problems, follow the same steps and set the “jp2launcher.exe” application (Java Web Launcher), as the default program to open the JNLP files.

That’s all folks! Did it work for you?
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