Comments on: How to fix Ajax Error: uncaught exception: Permission denied to call method XMLHttpRequest.open

By: GG

GG — Thu, 01 Mar 2012 17:18:32 +0000

I have this permission denied issue for IE8 on my few customers’ PC, but works fine on most of my customers’ PC.

Anyone has any idea?

By: Punit Pandey

Punit Pandey — Wed, 09 Jun 2010 17:46:59 +0000

Didn’t work for me in Firefox 3.6.2. Any other pointers?

By: Mansi Purohit

Mansi Purohit — Sat, 07 Nov 2009 11:35:08 +0000

Error: uncaught exception: Permission denied to call method XMLHttpRequest.open

This error might be comming because of tag you use in your html header. tag does not support certain events like onload, onunload
remove this tag from your html and your jscript will run properly

refer: http://www.w3schools.com/TAGS/ref_eventattributes.asp

if this solution helps you plz reply on: manivnsgu@gmail.com

Cheers!

By: Jesse Hu

Jesse Hu — Fri, 09 Jan 2009 06:14:55 +0000

Works for me on Firefox 3/2 . Thanks a lot.

By: Erica Harris

Erica Harris — Wed, 12 Nov 2008 12:20:29 +0000

Many thanks, Ben, this has been a huge help to me. Thanks for the pointer to the Mozilla development site too.

By: Ben Lam

Ben Lam — Wed, 12 Nov 2008 10:27:57 +0000

Hi Erica,

Your users, if using your Salesforce app under Firefox, would have to make the same change in their browser to avoid this security based error. It basically prevents malicious code from being executed from an innocent looking domain/website.

See Mozilla’s notes on Firefox 3 and cross site scripting for more information on this later version.

I’m not familiar enough with Internet Explorer’s latest versions to say if the same is true of them.

Best of luck,

Ben

By: Erica Harris

Erica Harris — Wed, 12 Nov 2008 10:14:20 +0000

Thanks for this, it worked for me using Firefox 2. Will my users have to do the same to run my code from their browsers? I’m making the call from salesforce, at the moment in an scontrol, to push XML API requests to another hosted system’s server and get responses from it.

By: Chris Mumford

Chris Mumford — Tue, 01 Jul 2008 21:12:12 +0000

I just noticed this comment in the Firefox 3.0 release notes, “Support for Cross-Site XmlHttpRequest has been removed until the specification becomes more stable and the security model is improved (bug 424923)”.

By: Al Feersum

Al Feersum — Mon, 16 Jun 2008 13:33:30 +0000

Can’t get it to work in FF 2.0.0.14 - although prefs.js updated, can’t see the entries in about:config.

By: Chris Mumford

Chris Mumford — Wed, 04 Jun 2008 18:41:37 +0000

Thanks for the info. This works in Firefox 2.X and also in 3.0b5. However, when I upgraded to Firefox 3.0 RC1 it no longer works nor can I find a solution as of yet.