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Facebook Bug “xd_proxy.css” Affects CNN, MSNBC, Reface.me




A bug in Facebook’s Social Plugins is currently causing browsers to show a download prompt for a file called xd_proxy.css (or xd_proxy[1].css) from static.ak.fbcdn.net when visiting websites with elements like Login or Like buttons, Recommendations, etc. You might’ve already noticed this while reading our previously posted article about Facebook’s value to you, but large sites like CNN, MSNBC and TechCrunch are also affected. The bug doesn’t seem to be restricted to a certain browser, as users of Firefox, Internet Explorer, Chrome, Safari and Opera have all experienced the forced download issue.

CNN Facebook Bug Download Prompt CSS

A quick fix for website owners and developers is to use https instead of http when calling javascript. Please note that this workaround is not endorsed by Facebook, and that the company is working on their own fix for this annoying yet harmless bug.

Change:

e.src = document.location.protocol + ‘//connect.facebook.net/en_US/all.js’;

to this: 

e.src = ‘https://connect.facebook.net/en_US/all.js’;

Or just replace any call to http://connect.facebook.net/en_US/all.js with https://connect.facebook.net/en_US/all.js while waiting for the official bugfix.

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Side notes

Facebook Bug “xd_proxy.css” Affects CNN, MSNBC, Reface.me Posted by on February 4, 2011 at 6:06 PM. Use this trackback if you're linking this story.

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