I am using web sockets in a web application and they have stopped working in Internet Explorer, but after a little research no site with web sockets is working. Sites like twitter show the same error message in the IE console.
Here is the error:
SCRIPT12004: An internal error occurred in the Microsoft Internet extensions
I have tried resetting all settings for IE and I have reset the web sockets according to this article: http://answers.microsoft.com/en-us/ie/forum/ie9-windows_7/an-internal-error-occurred-in-the-microsoft/c3a186ac-4db0-46b5-b2ba-d134086bb293?msgId=47625912-31b8-44b7-be85-45562ac5767c
After trying everything I still can't find an answer or get it to work.
Stumbled upon same issue today.
After some investigation it turned out that i have changed the browser and document mode of the rendering engine using Developer tools (F12).
Setting back document mode back to Standards fixed the problem for me.