notacrocodile

i just installed forge for 1.12.2 but everytime I try to launch i get this error message, i reinstalled java and forge, reinstalled .minecraft but it doesn't seem to work Picked up _JAVA_OPTIONS: -Xmx640m Exception in thread "main" java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap') at net.minecraft.launchwrapper.Launch.(Launch.java:34) at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

I managed to fix it, thanks for the help, just had to update the launcher.

here: System.getProperty('os.name') == 'Windows 10' System.getProperty('os.version') == '10.0' System.getProperty('os.arch') == 'amd64' System.getProperty('java.version') == '1.8.0_161' System.getProperty('java.vendor') == 'Oracle Corporation' System.getProperty('sun.arch.data.model') == '64' Refreshing remote version list... Refresh complete. Loaded 3 profile(s); selected 'Default' Getting syncinfo for selected version Queueing library & version downloads Download job 'Version & Libraries' started (16 threads, 7 files) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.5.2\vecmath-1.5.2.jar for job 'Version & Libraries'... (try 0) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar for job 'Version & Libraries'... (try 0) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar for job 'Version & Libraries'... (try 0) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar for job 'Version & Libraries'... (try 0) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar for job 'Version & Libraries'... (try 0) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar for job 'Version & Libraries'... (try 0) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\versions\1.10-forge1.10-12.18.0.2000-1.10.0\1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries'... (try 0) Couldn't download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' java.lang.RuntimeException: Server responded with 403 at net.minecraft.launcher.updater.download.EtagDownloadable.download(EtagDownloadable.java:48) at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:112) at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:15) at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:94) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Delta time to compare resources: 5077 ms Download job 'Resources' skipped as there are no files to download Job 'Resources' finished successfully Finished downloading C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar for job 'Version & Libraries': Local file matches local checksum, using that Finished downloading C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.5.2\vecmath-1.5.2.jar for job 'Version & Libraries': Local file matches local checksum, using that Finished downloading C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar for job 'Version & Libraries': Local file matches local checksum, using that Finished downloading C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar for job 'Version & Libraries': Local file matches local checksum, using that Finished downloading C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar for job 'Version & Libraries': Local file matches local checksum, using that Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\versions\1.10-forge1.10-12.18.0.2000-1.10.0\1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries'... (try 1) Finished downloading C:\Users\Murílo\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar for job 'Version & Libraries': Local file matches local checksum, using that Couldn't download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' java.lang.RuntimeException: Server responded with 403 at net.minecraft.launcher.updater.download.EtagDownloadable.download(EtagDownloadable.java:48) at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:112) at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:15) at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:94) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\versions\1.10-forge1.10-12.18.0.2000-1.10.0\1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries'... (try 2) Couldn't download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' java.lang.RuntimeException: Server responded with 403 at net.minecraft.launcher.updater.download.EtagDownloadable.download(EtagDownloadable.java:48) at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:112) at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:15) at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:94) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\versions\1.10-forge1.10-12.18.0.2000-1.10.0\1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries'... (try 3) Couldn't download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' java.lang.RuntimeException: Server responded with 403 at net.minecraft.launcher.updater.download.EtagDownloadable.download(EtagDownloadable.java:48) at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:112) at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:15) at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:94) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\versions\1.10-forge1.10-12.18.0.2000-1.10.0\1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries'... (try 4) Couldn't download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' java.lang.RuntimeException: Server responded with 403 at net.minecraft.launcher.updater.download.EtagDownloadable.download(EtagDownloadable.java:48) at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:112) at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:15) at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:94) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\versions\1.10-forge1.10-12.18.0.2000-1.10.0\1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries'... (try 5) Couldn't download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' java.lang.RuntimeException: Server responded with 403 at net.minecraft.launcher.updater.download.EtagDownloadable.download(EtagDownloadable.java:48) at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:112) at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:15) at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:94) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Gave up trying to download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' Job 'Version & Libraries' finished with 1 failure(s)!

the development console has this in its last command line ave up trying to download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' Job 'Version & Libraries' finished with 1 failure(s)!

It didnt worked.

nvm i found it and deleted it

what do you mean fromm the command line?

from the site itself https://files.minecraftforge.net/

Hello i just installed this game a while ago and i am facing problems with opening a forge modloader version for the version 1.10, and 1.7.2 the vanilla runs fine, the crash report will be in the discription, i dowloaded forge with the installer provided by the site. Thanks in Advance. attempting to download C:\Users\Murílo\AppData\Roaming\.minecraft\versions\1.10-forge1.10-12.18.0.2000-1.10.0\1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries'... (try 5) Couldn't download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' java.lang.RuntimeException: Server responded with 403 at net.minecraft.launcher.updater.download.EtagDownloadable.download(EtagDownloadable.java:48) at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:112) at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:15) at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:94) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Gave up trying to download https://s3.amazonaws.com/Minecraft.Download/versions/1.10-forge1.10-12.18.0.2000-1.10.0/1.10-forge1.10-12.18.0.2000-1.10.0.jar for job 'Version & Libraries' Job 'Version & Libraries' finished with 1 failure(s)!