I this several days to replace the server, web server,

Before a test site found GZIP open failure, today is WIN2003 system, is now 2012 edition, directly open the "compression" label on IIS, check all,

Actually the default is already checked, but use inspection GZIP tool, status to not open,

Find a lot of information on the Internet, are no more than about IIS8 version of the open method, ask everybody to help,