Jar file opens with internet explorer

I downloaded Optifine, it's a jar file, after that i installed Java to install optifine with the jar file, but the jar file opens with internet Explorer prompting me to download the file again. This is häppening with Windows 10

2 Answers

Your .jar file-association has probably been hijacked, perhaps by Internet Explorer.

You can fix the problem with:

• Download and run the freeJarfix, or
• Uninstalling an then re-installing Java Runtime, or
• In Windows Explorer, right-click on the .jar file, select Open withand click on Choose another app. Navigate to and select javaw.exe. You would need to ensure a -jar parameter is added.

It would be better to add the JRE executable folder to the PATH environment variable, although not absolutely required.

Right Click on it -> Open with and then select the Java Runtime Enviroment. Also make sure ypu have Java installed. If its not in this list, search for it in your program files folder. Viele Grüße!