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Simply download Jarfix and run it. The Breakdown has an easy and helpful website to using Jarfix. Simply follow the instructions and download it in the link below:
I used the jarfix tool mentioned there, which I can automate the download of via choco install jarfix -y and then I used only the /s switch (for silent). Presumably it is finding my Java installation in the non-standard location via my JAVA_HOME envinronment variable, and from that it properly updated the associations and all .jar files are ...
I've searched for a while for a fix, I think I've tried all of the common fixes, I even tried Jarfix. I have JRE installed, and I deleted and reinstalled it again just to make sure, I'm running Windows 10 64 bit. If I double click the .jar just nothing happens, and I've made sure that .jar is set to open with the right file.
When I double click on a .jar nothing happens. I was able to open them a week ago but now nothing. Things I have tried so far: reinstalling both JRE and JDK Running jarfix.exe creating a .bat file...
Try to do all of the following things: Ensure that you have JRE installed by entering java -version in command prompt.
This regularly occurs when you change the extension on the JAR for ZIP, extract the zip content and make some modifications on files such as changing the MANIFEST.MF file which is a very common case, many times Eclipse doesn't generate the MANIFEST file as we want, or maybe we would like to modify the CLASS-PATH or the MAIN-CLASS values of it.
I can't open or run my .jar file. I just installed java, but I tried to open the .jar with other programs first, so the double-click defaults to something else and I can't change it back. java -jar
The jarfix tool mentioned in this thread most likely does nothing more than the registry modification for you. I prefer manual registry change method, as that implies that system administrator can "push" the registry change to all workstations in the network.
Downloading and running Jarfix.exe to no avail. 2. 2. Made sure I have JDK and JRE (I have Java 7 update 79, 8 update 5, and 8 update 71; Java SE Dev Kit 7 update 79 and 8 update 5)