Windows 10: Unable to change the default application .JAR files use.

Currently, I'm unable to change the default application used to start/open JAR files. The option is simply greyed out on my device, and attempting to click on it redirects me to the Microsoft Store to try and download another application. I have multiple versions of Java installed on my machine already, so I see no reason why I'm not able to select the default app for only this file type. Any help would be appreciated...

:)

 

Java .jar file is not downloaded as a java file.

Have you tried the second solution?

"Open the Settings app. Navigate to the System > Default apps.

Scroll all the way down and select Choose default apps by file type.

Locate the .jar file type and choose a default application.

This method offers limited options and you can only choose applications recognized by Windows 10. Fortunately, there’s another method that you can try. To change file associations, do the following:

Press Windows Key + X to open Win + X menu and choose Control Panel from the list.

When Control Panel opens, select Default Programs.

Click on Associate a file type or protocol with a program.

Locate the .jar file on the list and double-click it.

A list of suggested applications will appear. Click on More apps.

Scroll all the way down and choose Look for another app on this PC.

Locate the javaw.exe file. By default, the application should be located in Program Files folder. Select the application and choose it as a default for .jar files.

Optional: Some users recommend changing the parameters of javaw.exe. To do that, simply locate the file and create its shortcut. Right-click it and navigate to the Properties. Now, locate the Target file and add -jar “%1” % . Be sure to select this newly created
shortcut in Step 7.

You can also change file association by right clicking the jar file and choosing Open With > Choose another app. After doing that, follow the steps 5 to 8 from the above"

 

jar files

Fixing .jar file opening on Windows requires two steps:

• Open the Control Panel, and chose "Default Programs - Associate a File type or protocol with a program". Find .jar extension (Executable JAR file) there, and pick Java as default program to open this extension. It will probably be listed as "Java Platform(SE)".
  A faster alternative perhaps is straightforward right-click on a .jar file, and then change associated program by clicking on the "Change..." button.
• Now open the regedit, and open the HKEY_CLASSES_ROOT\jarfile\shell\open\command key. Luckilly for us, we may specify parameters there for the (Default) value. This is normally: C:\Program Files\Java\jre7\bin\javaw.exe" -jar "%1" %*

I Hope this Answers your Question!

 

How to change default programs to open .jar files in Windowws 10?

Hello Snott,

As you are facing issues with setting-up default program to access .jar files, we will help you with this issue.

Try few of the below steps to change the default program for .jar files and check if it helps.

• Press Windows key, type default programs
  and select Default Programs.
• Click on Associate a file type or protocol with a program.
• Select .jar file type and click on Change program.
• Choose the program you wish to open with and click
  OK

Hope it helps. Get back to us with an updated status of this issue for further assistance.

Thank you.