When I click on any HTML file in Windows 7 (64 bit, Ultimate) I get an error dialog that says "There was a problem sending the command to the program." The only way I can open local HTML files is with IE as default browser - which I do not want. I first noticed the error when clicking links in emails in Outlook 2010. But now it also happens on any local HTML file - like help files (help files that I really need to be able to easily read). I have tried editing the registry (this solution found at http://www.raymond.cc/blog/archives/2008/03/25/fix-general-failure-when-open-link-or-url-from-outlook-and-windows-mail/) which temporarily fixed the problem, but would not work a second time to fix the issue as the change I made was still present in the registry, so nothing to do. I tried making IE the default browser then making FF the default browser again, but that didn't work. I tried checking the default program for HTML files in Win7, but that is set to FF. I don't get it. This just started happening in the last 2 weeks or so. The "This happened" drop-down below is not entirely correct. This happens whenever I click on a local HTML link or a link in an Outlook email. But, the "This happened" drop down does not have an option for "When I click a local HTML link".