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    4 easy hacks to fix “Unable to access jarfile” error

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    4 easy hacks to fix “Unable to access jarfile” error 21
    Shivangi Kaushik
    She's a final year electronics and communication engineering student from Uttar Pradesh. A gregarious and outgoing personality since childhood , who enjoys interacting with people and is always open to a healthy discussion on any topic. She's affable and confident enough to share her perspective and is a keen listener. Being an ex ICSE student, communicating and writing came naturally to her, which helped her write for various technical and non technical pages on the social media platforms and websites. . She has been actively volunteering and participating in various zonal and state level technical and literary events. Music is the ultimate soothing factor in her life and she likes to paint and sketch in her free time. She sights an exciting and stable career in the fields of Marketing and Public Relations in future.

    A JAR ( Java Archive) is a file format based on ZIP file format and is used for lumping multiple Java files and the linked resources( say images, texts, etc.) into one file. 

    Lately, many users have complained about an error message stating “Unable to Access Jarfile”  popping while they are trying to open Jar files. 

    Let’s try to understand what this error means and then check out some easy ways to do away with this error.

    What is the “Unable to Access Jarfile” error?

    The  “Unable to Access Jarfile”  error conveys about the panel’s inability to locate the server JAR file as reported in the Server Jar field on the server details page.

    unable to access jarfile

    Causes for the “Unable to Access Jarfile” error?

    In this segment, we’ll look into the possible reasons leading to this error.

    • This error mainly occurs when you’re trying to upload and set the panel for looking into the custom server versions which are not provided in the Server Jar Installer.
    • The required JAR file is not present in the JAR folder
    • The entry in the JAR value on the server details page might be invalid
    • The latest version of JAVA  is not installed on your system
    • Your system might get subjected to some malware
    • Default program to open JAR file is not set
    • The file path for Java executable might not be set correctly and is hinting to the wrong location.

    Now that we are having a brief on what is meant by the “Unable to Access Jarfile” error and the factors causing this error, let’s delve into the solutions to style this problem.

    How to solve “Unable to access jarfile Minecraft” error?

    Here we’ll be going through 4 easy step-by-step solutions that will solve this error superficially.

    Let’s begin!

    Install the latest Java Version

    Installing the proper Java architecture on our system is a crucial step to run JAR files successfully. To add on to this, installing the latest version will help in resolving the “unable to access Jarfile” error. Following are the steps to install the latest Java version on your system:

    • Press Win+R to open the run dialogue box.
    • Type appwiz.cpl in the dialogue box and click OK
    4 easy hacks to fix “Unable to access jarfile” error 1
    • Navigate Java in the Programs and Features window. Right-click on the option and click Uninstall.
    4 easy hacks to fix “Unable to access jarfile” error 2

    Restart your PC to check if the “Unable to Access Jarfile” error is fixed. If not then switch to the following discussed methods.

    Set the Default File Association

     If the “Unable to Access Jarfile” error sustains then try varying the file association.

    Following are the steps to change File association:

    • Navigate to the JAR’s file directory. 
    • Right-click and select Open with and select Java Program. (or click Choose another app  and select JAVA)
    • Press Win+I to go to the Settings application.
    • Select Default apps from the Apps section as shown below. 
    • Now select click Choose default apps by file type 
    4 easy hacks to fix “Unable to access jarfile” error 3
    • Locate the entry .jar file and then select Java to open it
    • Save the changes and exit

    Restart the PC once done and check if the issue is resolved. If not then jump to the next method.

    Check for any Malware threat

    If you are not able to fix the “Unable to Access Jarfile” error then there is a possibility of some malware or virus affecting your system.

    Therefore you should run a virus check on your system

    Once done, perform either of the two methods discussed previously in this article. Following are the steps to remove malware from Windows 10 (you can try Top 10 Free malware removal tool):

    STEP 1- Enter safe Mode

    • Type Settings in the search bar next to the Windows icon on the bottom left corner of your PC’s screen to open the Settings window on your PC
    4 easy hacks to fix “Unable to access jarfile” error 4
    • Select Update & Security<  Recovery  as shown below
    • Go to Advanced startup section 
    • Click on Restart Now.
    4 easy hacks to fix “Unable to access jarfile” error 5
    • After your PC has  restarted, the Choose an option window will hit your screen
    • Select Troubleshoot > Advanced options > Startup Settings > Restart
    4 easy hacks to fix “Unable to access jarfile” error 6
    4 easy hacks to fix “Unable to access jarfile” error 7
    4 easy hacks to fix “Unable to access jarfile” error 8
    • Press F4 of various options provided when your system restarts on your keyboard to start the laptop in Safe Mode.

    STEP 2- Delete temporary files using Disk Cleanup.

    Finally, run the malware scan on your PC:

    • Type Settings in the search bar next to the Windows icon on the bottom left corner of your PC’s screen to open the Settings window on your PC
    • Select Update & Security<  Windows Security< Virus & threat protection as shown below.
    4 easy hacks to fix “Unable to access jarfile” error 9
    • In the following pop-up window, click on a quick scan.

    The process might take a few minutes to get completed. Once the process ends, the “Unable to Access Jarfile” gets resolved.

    Check for Documentation (for Developers)

    If you’re a developer coding with JAVA and even you are witnessing the  “Unable to Access Jarfile” error, then you’re advised to read the documentation for the utility that runs the JAR file. You may have made mistakes with the file path or function parameters, changing which will help you resolve this error.

    Conclusion

    4 easy approaches could help you get rid of the “Unable to access jarfile Minecraft” error with the most facile manner.

    To add on these, you can even try fetching the valid entries from the ones you have in the jar folder via FTP.

    Renaming an existing server JAR  file name to what the panel is looking for ( say from Minecraft-1.10.2.jar to minecraft_server.jar), saving it and then restarting the server is yet another method to resolve this complicated problem

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