Solved start.bat now wont open


lilVloi

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Hey i want to create minecraft server on my localhost and i installed latest minecraft version and i created start.bat, inside it this code

@echo off
java -Xms#G -Xmx#G -XX:+UseG1GC -jar server.jar --nogui
pause

and i try to open start.bat its not opening and not doing anything

its .bat disabled on Windows 11 and i need to enable it ?
 
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Archigos

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Batch files are NOT disabled in Windows 11... can you try opening a normal command prompt in the directory and manually run the .bat file to see if an error comes up?
 

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lilVloi

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Batch files are NOT disabled in Windows 11... can you try opening a normal command prompt in the directory and manually run the .bat file to see if an error comes up?
Hi thanks for replying, i did what u told to try to open it using Command Promppt and it worked but now im running on a new issue it says

Invalid initial heap size: -Xms#G
Error: Could not create the Java Virtual Machine.
Error: A fetal exception has occurred. Program will exit.
Press any key to continue . . .
 

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Archigos

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Sadly, I don't know the syntax for running a Minecraft Server, but I thought you had to specify RAM, etc. which I didn't see in your switches.
 

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As a test, save this as start.bat and see what happens.

Batch:
@echo off
java -jar server.jar --nogui
pause
 

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Archigos

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I see the problem now... in the switches you're using, you have the change the # to a number
So:
Batch:
java -Xms#G -Xmx#G -XX:+UseG1GC -jar server.jar --nogui
would be:
Batch:
java -Xms1G -Xmx2G -jar server.jar --nogui

I couldn't find info on -XX:+UseG1GC

Info taken from here: Tutorials/Setting up a server
 

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lilVloi

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I see the problem now... in the switches you're using, you have the change the # to a number
So:
Batch:
java -Xms#G -Xmx#G -XX:+UseG1GC -jar server.jar --nogui
would be:
Batch:
java -Xms1G -Xmx2G -jar server.jar --nogui

I couldn't find info on -XX:+UseG1GC

Info taken from here: Tutorials/Setting up a server
that also didn't work,

C:\Users\lilVloi\Desktop\localhostserver>java -Xms1G -Xmx2G -jar server.jar --nogui
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: net/minecraft/bundler/Main has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

C:\Users\lilVloi\Desktop\localhostserver> _
 

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Archigos

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By the looks, you're using an older version of JRE and need to install a newer one.

check
Batch:
java --version
 

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lilVloi

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By the looks, you're using an older version of JRE and need to install a newer one.

check
Batch:
java --version
Oh i see now
 

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Archigos

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Also, don't forget to accept the EULA by changing the value from false to true in the required file before you attempt to start it if you haven't already.
 

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lilVloi

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Also, don't forget to accept the EULA by changing the value from false to true in the required file before you attempt to start it if you haven't already.
yes i know about the EULA but how do i update java to be acceptable running a localhost server
 

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lilVloi

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yes i know about the EULA but how do i update java to be acceptable running a localhost server
is ther a way to do that using command prompt
 

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Archigos

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There isn't an 'easy' way to accept the EULA via command prompt, just open the text file, change the info and save it.
 

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Archigos

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You can get the newest version of the Server from here: Minecraft Server Download with an example of the command to use in your batch file as well.
 

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lilVloi

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Archigos

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Honestly don't know since I've never tried it, but I 'think' you only need the JRE and not the JDK, but if you want, the JDK won't hurt you any (just take up a little more room on your drive) as the JDK integrates the JRE inside it.
 

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    Radeon Pro 570 4 GB
    Monitor(s) Displays
    27" 5K, 34" UW
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    32GB NVME, 1TB SSD

lilVloi

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Honestly don't know since I've never tried it, but I 'think' you only need the JRE and not the JDK, but if you want, the JDK won't hurt you any (just take up a little more room on your drive) as the JDK integrates the JRE inside it.
Thank u so much i think the problem has been solved, i just need to update the java version ;3
 

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    Memory
    8.00 GB (7.56 GB usable)
    Graphics Card(s)
    Intel(R) Iris(R) Xe Graphics
    Monitor(s) Displays
    Generic PnP Monitor
    Screen Resolution
    1920 x 1080
    Hard Drives
    UMIS RPJTJ256MEE1OSWX | Xvd
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Archigos

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Welcome, glad I could help...
 

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    Memory
    16 GB DDR4-3200 SDRAM
    Graphics Card(s)
    Intel® Iris® Xᵉ Graphics
    Screen Resolution
    1920x1080
    Hard Drives
    512 GB PCIe® NVMe™ M.2 SSD
  • Operating System
    macOS Big Sur
    Computer type
    PC/Desktop
    Manufacturer/Model
    Apple iMac 27" 5K (2017)
    CPU
    3.4 GHz Quad-Core Intel Core i5
    Memory
    40 GB 2400 MHz DDR4
    Graphics card(s)
    Radeon Pro 570 4 GB
    Monitor(s) Displays
    27" 5K, 34" UW
    Screen Resolution
    Mon 1: 5120 × 2880 Mon 2: 2560 x 1080
    Hard Drives
    32GB NVME, 1TB SSD
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