http://support.microsoft.com/?scid=kb%3Ben-us%3B306231&x=16&y=11
You can resolve the problem on the Apache Web server side if you add the correct MIME type for the HTC behavior with the following command:
AddType text/x-component .htc
If the command
AddType is not found or is not available, follow these steps to add the MIME type
text/x-component for the .htc file manually to the Apache Web server.
- Locate the directory /Etc/apache/.
- Open the file Mime.types.
- Add the following line to the file: text/x-component htc
- Save and close the file.
- Restart the Apache Web server. The Mime.types file is reloaded after you type: /usr/apache/bin/apachectl restart
如上所说修改Apache配置文件：
1.修改 /apache2/conf/mime.types文件，在末尾增加一行：text/x-component htc
2.修改 /apache2/conf/httpd.conf文件，在末尾增加一行：AddType text/x-component .htc
3.重启apache服务器
4.清空IE缓存测试下，问题解决了(这个还是有必要的)。
如果增加 AddType text/x-component .htc 后无法启动Apache，就不要增加了。
从上面的文档来说其实只要修改其中一个就行了。