Posts Tagged ‘Wordpress’

Wednesday, September 23rd, 2009

WP Super Cache IE7 Cannot Display Webpage


WP Super Cache is an amazing Wordpress plugin for webmasters with large sites or with sites that use a ton of SQL queries to generate the content. When I first installed, everything appeared to be working fine. When I tested the site in Internet Explorer 7 I received the dreaded “Explorer cannot display the webpage” error. There where a couple of things that I needed to change in order to make it work. The first thing was that I had to modify the “/wp-content/cache/.htaccess” file.

Add the following code at the beginning of the htaccess file directly below the “# BEGIN WPSuperCache”

<IfModule mod_mime.c>
AddEncoding gzip .gz
AddType text/html .gz
<IfModule mod_deflate.c>
SetEnvIfNoCase Request_URI \.gz$ no-gzip
<IfModule mod_headers.c>
Header set Cache-Control 'max-age=300, must-revalidate'
<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType text/html A300

This seemed to fix some bugs I was having with IE6, but IE7 still wouldn’t display the page. I then realized that earlier I had started using PHP gZip compression. So at the top of the header.php file for my theme I had the following line.


Once I removed this then IE7 displayed the page right away.