XUL Runner Not Found GECKO error

Asked By 1020 points N/A Posted on -

Hi, I am posting here an error message that I encounter while running gecko, I pasted below the error message screen of the error message to have a clear view of my problem.


XULRunner Not Found

Couldn’t find XULRunner in ‘C:UsersOwnerdocumentsvisual studio

2010ProjectsFireFox BrowserbinDebug’, Call

Xpcom.Initialize()in your application startup code and specify the

 directory where XULRunner is installed.

If you do not have XULRunner installed, click Yes to open the download

Page. Otherwise, click No, and update your application startup code

As I looked on the error and think about it, I am very confused on what to do, the first that came to my minds is a virus attack, so I did a virus scan to my computer, but no virus was found since I am very careful in using my computer, that's all in my mind in solving this issue, please share some solution on my problem, thanks a lot. 

Best Answer by Allyeah
Answered By 0 points N/A #122836

XUL Runner Not Found GECKO error


Dear Lukegams

Above mentioned error message shows that XULRunner not installed in your system or not proper configured. For running Gecko, XulRunner is necessary. You can download this from: https://developer.mozilla.org/en-US/docs/Archive/Mozilla/XULRunner/Getting_started_with_XULRunner. On this site, there are complete procedure mentioned for installation of XulRunner on this site.

If you already have XULRunner in your system then you should configure it and you can found configuration procedure on above mentioned site.

Take Care


Best Answer
Best Answer
Answered By 0 points N/A #122837

XUL Runner Not Found GECKO error

  • The error message contains a technical and detailed instruction and it is not a virus attack. What stated in the message was an update of the XULRunner where it cannot find an exact file to incorporate with running Gecko.
  • Try selecting Yes button and you will be redirected to the download page so you can install the latest XULRunner. (as what the instruction says.) It is safe to just download even if you have used XULRunner before and running the installation again will repair your previous XULRunner installation. 
  • If you believe that you have your XULRunner functioning well then you could select no and go to the site of the program you wish to run and look for updates.

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