I can't open .jar install file

Discus and support I can't open .jar install file in XBoX on Windows to solve the problem; I'm trying to install forge for minecraft, but i can't run the install file. I've tried to install it from the command prompt, but i get the message:... Discussion in 'XBoX on Windows' started by Matias Sandvik, Nov 19, 2023.

  1. I can't open .jar install file


    I'm trying to install forge for minecraft, but i can't run the install file. I've tried to install it from the command prompt, but i get the message: Error: Unable to access jarfile forge-installer.JAR?

    Can you please help me?

    :)
     
    Matias Sandvik, Nov 19, 2023
    #1
  2. SwordofWhedon Win User

    I can't open .jar install file

    i'm sorry third-party mods have to be supported by their creators.
  3. KhajiBower34 Win User

    I can't open .jar install file

    Hello Matias S, I am an independent advisor and I will be happy to help you today. My name is Khaji

    I understand your frustration. Here are some solutions that might help fix the problem with installing Forge for Minecraft:

    Reinstall Java: Often corruption or problems with the application can lead to problems, and reinstalling is the only viable solution.

    Press Windows + R to open the Run command, type appwiz.cpl in the text field and click OK

    Change the default app for .jar files to Java: Go to Settings > Apps > Default apps > Choose default apps by file type. Scroll down and search for .jar. Change the application for the .jar file to Java

    Run the .jar file from the command line: Hold down the shift key and right-click on an empty space in the folder where the installer is located. Select “Open PowerShell window here” and then try running the file with the command java -jar <file name="">

    Rename the Forge installation file: Go to the Downloads folder and locate the Minecraft Forge installation file. Then, rename the forge-installer. JAR file to forge. JAR

    Thank you very much for your patience and understanding! If you need anything else, do not hesitate to contact us again.</file>
  4. MichaelCoomber1 Win User

    Can I recover my old Minecraft Worlds?

    Ah, okay.

    Thank you for the help.

    It seems to be a common problem with JAR Files not opening, I made a Batch File to fix it.

    Kind regards,

    Michael.
  5. zsaei Win User

    minecraft does not run

    Hi Josef,

    I followed the steps you gave me and it seemed to have gotten rid of the java runtime error however I am now encountering numerous errors such as;

    Failed to download file.
    Name: fastutil-8.5.6.jar
    URL: https://libraries.minecraft.net/it/unimi/dsi/fastutil/8.5.6/fastutil-8.5.6.jar
    Filename on disk: fastutil-8.5.6.jar
    Path: C:\Users\zacte\AppData\Roaming\.minecraft\libraries\it\unimi\dsi\fastutil\8.5.6\fastutil-8.5.6.jar
    Exists: Nonexistent

    and

    Failed to download file.
    Name: jna-platform-5.10.0.jar
    URL: https://libraries.minecraft.net/net/java/dev/jna/jna-platform/5.10.0/jna-platform-5.10.0.jar
    Filename on disk: jna-platform-5.10.0.jar
    Path: C:\Users\zacte\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna-platform\5.10.0\jna-platform-5.10.0.jar
    Exists: Nonexistent
  6. MichaelCoomber1 Win User

    Can I recover my old Minecraft Worlds?

    Me again. Just updating that I have managed to recover my Worlds.

    For some reason, I had to now move them to the Mod Folder, and now they work.

    The only thing stopping me from playing them, is Java. I have the right JAR Files. But it doesn't want to open them with Java.
Thema:

I can't open .jar install file

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