Cannot Load 32-bit Swt Libraries On 64-bit Jvm May 2026

For Gradle:

file swt-gtk.so If it says x86 (32-bit) and your JVM is x64 (64-bit), you've found the mismatch. Method 1: Download the Correct SWT Build (Manual Fix) Go to the official SWT download page and select your platform + architecture. cannot load 32-bit swt libraries on 64-bit jvm

| Platform | Artifact ID (classifier part) | |---------------|----------------------------------------| | Windows 64-bit | org.eclipse.swt.win32.win32.x86_64 | | Linux 64-bit | org.eclipse.swt.gtk.linux.x86_64 | | macOS 64-bit | org.eclipse.swt.cocoa.macosx.x86_64 | | macOS ARM64 | org.eclipse.swt.cocoa.macosx.aarch64 | For Gradle: file swt-gtk

dumpbin /headers swt-win32.dll | find "machine" Or on Linux/macOS: cannot load 32-bit swt libraries on 64-bit jvm

Stick to Maven artifacts with platform classifiers, and you'll rarely see this error again. Have you run into other SWT native library issues? Share your war stories in the comments below.