I can launch the F12 developer tools in IE9, but for some sites, they don't do anything. The window opens but sits with the word "Loading..." in the HTML tab, and none of the controls work.
Any idea what might be wrong?
UPDATE I checked the network tab with Chrome and do not see any hanging requests. Further, the page itself is responsive in IE.
Clear Your Browser Cache In some cases, you might run into the “This site can't be reached” error due to problems with your cached files. To solve that issue, you'll need to clear your browser cache. Clearing cached images and files in Chrome. Click on Clear Data,and that's it.
F12 tools provide a set of tools that you can use to design, debug, or view webpage source code and behavior. F12 tools can be opened in a separate window or pinned to the bottom of the webpage that you're debugging.
Ok, I figured it out - the problem was that I have Google Chrome Frame installed, and that certain sites were activating it, which was effectively taking over the DOM/CSS rendering.
I didn't realize it was still there, because it wasn't showing up under Tools/Manage Add-Ons to disable. After uninstalling cleanly, everything works again.
So my own mistake with my environment.
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