Ok it seems that this is still an issue in Firefox 25.0.1 (on OS X). I am using https://github.com/PixelsCommander/OnlineJS which sends XMLHTTPRequests to a server to check if the server is online. Sometimes the return status is 0. About 5 of 100 request the status is 0.
Other browsers are working without any problems. Maybe someone can confirm this issue. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/394912 Title: XMLHTTPRequest Randomly Fails with Status Code 0 During Reload/Refresh and/or Multiple Requests Status in The Mozilla Firefox Browser: Expired Status in Launchpad Greasemonkey Scripts: Fix Released Status in “firefox” package in Ubuntu: Fix Released Status in “firefox-3.5” package in Ubuntu: Won't Fix Bug description: Binary package hint: mozilla-firefox If Firefox 3.0 or 3.5 is making an XMLHTTPRequest, and the page load is interrupted, Firefox calls the failure handler with a response status of zero. To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/394912/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
