tag:blogger.com,1999:blog-5424800.post8923454853011449605..comments2024-03-25T20:01:14.140+08:00Comments on hongjun's Blog: Microsoft Excel 2007 error - Trying to open a different format than specified by the file extensionUnknownnoreply@blogger.comBlogger1125tag:blogger.com,1999:blog-5424800.post-4209119778208711742012-07-11T19:14:20.962+08:002012-07-11T19:14:20.962+08:00More information here for those who are interested...More information here for those who are interested on why there is such a thing called "Extension Hardening".<br /><br /><a href="http://www.jwgoerlich.us/blogengine/post/2009/08/11/Excel-Extension-Hardening-and-Web-Applications.aspx" rel="nofollow">http://www.jwgoerlich.us/blogengine/post/2009/08/11/Excel-Extension-Hardening-and-Web-Applications.aspx</a>hongjunhttps://www.blogger.com/profile/17931328655666566330noreply@blogger.com