Windows 10: Does anyone know why I can't open jar files?

Recently I was trying to install Minecraft Forge, and I was having trouble with it.First off, I tried to set the .jar file default app to the java app, and that helped, but then when I clicked the .jar file, it opened and then immediately closed.Then, I tried creating a batch file, which also did not work.Could someone please help me out? I'm on a Windows 11 Lenovo laptop

:)

 

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!

 

.jar files opening in internet explorer

Hi Robert,

Welcome to Microsoft Community.

I understand that .jar files opens in Internet Explorer by default and downloads again on Windows 10. I will certainly help you.

I suggest you to follow the below steps and check if it resolves the issue.

1. Right click on the .jar file, select Open with
and click on Choose another app.

2. Select the app you want to open the .jar file from list.

3. If required, highlight the app and check the option
Always use this app to open, click OK.

Hope this helps. If the issue remains unresolved, please get back to us and we would be happy to help.

 

Cannot open .jar files

Hi Hardy,

Possible cause why you were not able to open .jar files might be compatibility issue. To provide you the appropriate resolution, we would like to know the following information:

• When did the issue start?
• Are you getting any error messages?
• Do you have a third-party antivirus? If yes, we suggest that you disable it for the meantime.
  

Regards.