IE9 development tools giving "Unable to attach to the process." error

Posted by Urbycoz on Super User See other posts from Super User or by Urbycoz
Published on 2011-11-25T12:35:43Z Indexed on 2012/04/13 17:35 UTC
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Notice: I have now rebuilt my machine to remove this bug, so I can no longer verify any answers.

I recently installed Internet Explorer 9, and activated the development tools by pressing F12; I then clicked "script" and the "start debugging" button but I got the following error:

Unable to attach to the process. Another debugger might be attached to the process.

I get this message regardless of the site I am on (currently I'm on google.com). I have no other applications running, and have rebooted my machine.

Can anyone suggest why this may be appearing?

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