Forge version: 49.0.3
Minecraft version: 1.20.4
Note that as this is the start of a new version, it is recommended that you check the downloads page and use the latest version to receive any bug fixes, as the first ever build of Forge for any MC version is usually buggy.
The first build for Forge 1.20.4 has been released! It is based on 49.0.2 for 1.20.3, which reimplemented support for executable server jars and should improve compatibility with slow server hosts.
The reason Forge uses the same major version as 1.20.3 is because the difference between 1.20.3 and 1.20.4 was a single line change by Mojang that fixed a data loss bug. All 1.20.3 mods should work in 1.20.4 and there is no reason to use 1.20.3 which came out a day or two earlier.
If you find any issues, please let us know on the Discord. Sorry for the delay writing this post.
The command you need now in the run.bat is:
java -jar -Djava.net.preferIPv6Addresses=system (forge jar filename).jar
Yep, that's it. You don't need any of those super-long args anymore thanks to the simplified launch system in Forge 1.20.3+.
Hello! I have recently purchased a new computer and cannot download Optifine or Forge. The issue I am having is that the Java program 'javaw.exe' does not seem to open .jar files for me. As far as I can tell, I cannot open .jar files at all. The trouble-shooting I have tried so far is that I have un-downloaded and re-downloaded Java and that has not fixed it. I have followed the pathway to 'open with->choose another app->choose an app on your pc->Program Files (x86)->Java->jre-1.8->bin. and from inside bin I have tried opening these programs with each and every java application in there assuming I may have been wrong about which one I need to use. Still no luck. From there I checked to make sure that Java was allowed through my firewall and have seen no instances of any application with Java in the name anywhere in the list of apps to let through fire wall. I'm unsure of what to try next, so I would absolutely love help figuring out why my computer is not letting me open .jar files. Specifically these ones that I know are meant to open as installers.
Any ideas are appreciated. Thanks in advance!