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Editorial Team
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Asked: 2026-06-02T23:24:59+00:00

I’m developing an RCP application (Windows) with SWT.Browser ( SWT.MOZILLA ): Browser browser =

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I’m developing an RCP application (Windows) with SWT.Browser (SWT.MOZILLA):

Browser browser = new Browser(parent, SWT.MOZILLA);

It’s working fine with the old XULRunner 3.6.23 and the installation described here:

xulrunner.exe --register-global

I want to use the new XULRunner 8.x, but as mentioned here the old way to install XULRunner was removed.

So I added the XULRunner-Path programmatically:

System.setProperty("org.eclipse.swt.browser.XULRunnerPath", "Path\\To\\xulrunner_8.x");

But when I start my application, I’ll get the following error

org.eclipse.swt.SWTError: XPCOM error -2147467261

So what’s the preferred way to embed XULRunner 8.x with an RCP application and avoiding this error?

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1 Answer

  1. Editorial Team

    As of Eclipse 3.8 / 4.2 M6 the org.eclipse.swt.browser now supports embedding XULRunner 10.0.x, but you must ship a XULRunner 10 runtime and explicitly point at it as described in the FAQ:

    ...    
    System.setProperty("org.eclipse.swt.browser.XULRunnerPath", "path\to\xulrunner_10"); 
...

    The XULRunner 10 runtime can be downloaded from http://ftp.mozilla.org/pub/mozilla.org/xulrunner/releases/10.0/runtimes/

    JavaXPCOM

    Mozilla is not maintaining JavaXPCOM anymore, but as Grant Gayed says:

    The Browser does not require JavaXPCOM in order for it to work, it just exposes
    it to apps that want to use it themselves through its getWebBrowser() method.

    Linux

    XULRunner 10 will currently not run under Linux because of Mozilla bug 720682.

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