by Andreas

IE 11 / Windows 8.1 update killed my local sites

imageAfter upgrading to Internet Explorer 11 (included in the recent Windows 8.1 update) my local IIS hosted web applications suddenly died. But only in Internet Explorer – the other browsers (Safari, Chrome and Firefox) were unaffected.

After some research I found out that IE 11 comes with a brand new technology called AppContainer. It’s a protection mechanism that blocks Read and Write access to most of your system, including your IIS hosted sites.


There are several ways of getting around this, but I simply turned off “Enhanced Protection Mode” under IE 11 Internet Options. I use Chrome for my daily browsing anyway, and IE is just for verifying browser compatibility of my applications. Remember to restart your browser afterwards.