Can’t start Eclipse – Java was started but returned exit code=13


I am trying to get my first taste of Android development using Eclipse. I ran into this problem when trying to run Eclipse, having installed version 4.2 only minutes ago.

After first trying to start Eclipse without any parameters to specify the Java VM, I got an error message saying it couldn't find a Java VM called javaw.exe inside the Eclipse folder, so I found where Java was installed and specified that location as the parameter in the shortcut’s target. Now I get a different error, Java was started but returned exit code=13.

Similar questions seem to indicate that it’s a 32-bit/64-bit conflict, but I’m 99% positive that I downloaded 64-bit versions of both Eclipse and Java (RE 7u5), which I chose because I have 64-bit Windows 7.

  • If anyone knows how to confirm that my Eclipse and Java are 64-bit,
    that’d be appreciated.
  • If you think my problem is a different one, please help!
  • Please speak as plainly as you can, as I am totally new to Eclipse
    and Java.

Shortcut Target: “C:Program FilesEclipse-SDK-4.2-win32-x86_64eclipseeclipse.exe” -vm “C:Program Files (x86)Javajre7binjavaw.exe”

Full error code…:

Java was started but returned exit code=13
C:Program Files (x86)Javajre7binjavaw.exe
-jar C:Program FilesEclipse-SDK-4.2-win32-x86_64eclipse\plugins/org.eclipse.equinox.launcher_1.30v20120522-1813.jar
-os win32
-ws win32
-arch x86_64
-showsplash C:Program FilesEclipse-SDK-4.2-win32-x86_64eclipse\pluginsorg.eclipse.platform_4.2.0.v201206081400splash.bmp
-launcher C:Program FilesEclipse-SDK-4.2-win32-x86_64eclipseeclipse.exe
-name Eclipse
--launcher.library C:Program FilesEclipse-SDK-4.2-win32-x86_64eclipse\plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v201205221813eclipse_1503.dll
-startup C:Program FilesEclipse-SDK-4.2-win32-x86_64eclipse\plugins/org.eclipse.equinox.launcher_1.30v20120522-1813.jar
-exitdata 1e30_5c
-vm C:Program Files (x86)Javajre7binjavaw.exe
-jar C:Program FilesEclipse-SDK-4.2-win32-x86_64eclipse\plugins/org.eclipse.equinox.launcher_1.30v20120522-1813.jar


There are working combinations of OS, JDK and Eclipse bitness. In my case, I was using a 64-bit JDK with a 32-bit Eclipse on a 64-bit OS. After downgrading the JDK to 32-bit, Eclipse started working.

Use one of the following combinations.

  • 32-bit OS, 32-bit JDK, 32-bit Eclipse (32-bit only)
  • 64-bit OS, 32-bit JDK, 32-bit Eclipse
  • 64-bit OS, 64-bit JDK, 64-bit Eclipse (64-bit only)


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