Krullexneo

You absolute legend... I can't believe it was ClearType... WOW. I've been around computers most of my life, I'm the "tech expert" of the family and I usually solve most problems on a software and hardware level but this, this was something I just couldn't figure out... IT WAS MY CLEARTYPE SETTINGS... That's just insane haha thank you so much though, all I did was run Better ClearType Tuner and change my Contrast from 400 to 1000. (It does have 1000-2200 in a box underneath as I'm guessing a recommendation) I went with 1000 just to see and bingo, .jar files immediately open as normal. Still can't believe it was the ClearType settings lol

I have tried to reinstall Java multiple times, I've tried installing it on a different drive, I've tried using Jarfix, I've tried manually fixing the path of Java, I've tried most recommended fixes including creating a batch file and running it through that, I've tried -nogui. No matter what I do, .jar files will not launch on their own (they used to work fine but tbh I haven't tried in years, I think I know the root of the issue but it would involve a fresh install of Windows to fix so I'm hoping there is another way) Log. JVM info: Oracle Corporation - 19.0.1 - 19.0.1+10-21 java.net.preferIPv4Stack=true Found java version 19.0.1 Exception in thread "main" java.lang.ExceptionInInitializerError at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166) at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:147) Caused by: java.lang.IllegalArgumentException: 40 incompatible with Text-specific LCD contrast key at java.desktop/java.awt.RenderingHints.put(RenderingHints.java:1133) at java.desktop/sun.awt.windows.WDesktopProperties.getDesktopAAHints(WDesktopProperties.java:307) at java.desktop/sun.awt.windows.WToolkit.getDesktopAAHints(WToolkit.java:1087) at java.desktop/sun.awt.SunToolkit.getDesktopFontHints(SunToolkit.java:1805) at java.desktop/sun.awt.windows.WDesktopProperties.getProperties(WDesktopProperties.java:244) at java.desktop/sun.awt.windows.WToolkit.lazilyInitWProps(WToolkit.java:963) at java.desktop/sun.awt.windows.WToolkit.lazilyLoadDesktopProperty(WToolkit.java:952) at java.desktop/java.awt.Toolkit.getDesktopProperty(Toolkit.java:1554) at java.desktop/javax.swing.UIManager.<clinit>(UIManager.java:388) ... 2 more This shows instantly when trying to run any .jar file with a batch file. Clearly something is causing it not to work, I've googled most of these exceptions and such without any luck, maybe someone here can see why .jar files just won't work no matter what. I have Java SE 8 and JDK 19.