Since May 9, after a windows 10 update, on IE11 11.0.40, JNLP files wont launch from IE, but in a computer with IE version 11.0.34 it work perfectly.
Any ideas?
Thanks in advance
The problem is solved in Java 8 u162. Now you can have Java RE x86 and x64 installed and jnlp will open as it should in Internet Explorer. We are using sitelist / Enterprise Mode to redirect jnlp urls from Edge to Internet Explorer.
I had a problem opening a jnlp file, no matter what, trying to associate it with the Java Web Service exe javaws.exe, but it just would not associate and would not be run. I read throughout forums and all, and in the end from old DOS.exe files that I have used, somehow I did that and a miracle, it worked, I simply dragged the saved jnlp file and dropped it onto the javaws.exe, and it was executed. wanted to share this...
Alex, it appears our friends at Oracle heard you loud and clear. According to the JDK Bug System, this issue is being tracked under defect JDK-8185661. The fix appears to be in the pipeline for inclusion in an upcoming Critical Patch Update (CPU).
In the meantime, it is possible to test the fix on a development system using an early access build downloaded via Oracle's Java Early Access Downloads page. After reproducing the issue with JRE 8u151 (1.8.0_151-b12) on a Windows 10 version 1703 system, using IE 11.0.44, I verified the issue as fixed after updating to early-access JRE 8u162 (1.8.0_162-ea-b01).
I had the same problem after installing Windows 10 creators update.
Reason/Solution: I had both the 32-bit and the 64-bit JRE installed on my computer (Java 8 Update 131). This was not a problem before the creators update. Java applets and Java webstart applications have worked fine in Internet Explorer 11. However, Internet Explorer 11 (11.332.15063.0) seems to have problems with the 64-bit JRE. Java Webstart applications can only started if only a 32-bit JRE is installed.
Thanks! I uninstalled Java x64 and it solved my problem with jnlp-file that didn't start.
来源：https://stackoverflow.com/questions/44058428/jnlp-files-wont-launch-from-ie11-on-windows-10