Error uploading files bigger than 58 MB

Question

For uploading files bigger than 58meg I get HTTP error. or IO error when using media uploader or 500 Internal Server Error when using browser uploader in WordPress v3.5.1 Multisite . It seems to get almost all the way thru the upload before it stops and comes back with the error message. Hosting is LINUX thru Godaddy, they tested a php script to load a 130meg file successfully they can not find anything wrong, I get the error in IE9 or Firefox with or without flash plugin, cache cleared or not, only with files larger than 58megs, mod security fix does not seem to work for this issue either. FTP works fine to upload larger files and uploading files smaller than 58megs works fine, This is a multisite configuration and the errors happen for every site, I do not have any plugins loaded yet, Does anyone have any ideas about how to fix this?

my php5.ini file is this:
max_execution_time = 1800
max_file_uploads = 2000
memory_limit = 256M
post_max_size = 192M
file_uploads = On
upload_max_filesize = 192M

my .htaccess file now is:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^wp-admin$ wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^(.*\.php)$ $1 [L]
RewriteRule . index.php [L]

</IfModule>

# END WordPress

part of my wp-config.php file is:

/* Multisite */
define('WP_ALLOW_MULTISITE', true);

define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', true);
define('DOMAIN_CURRENT_SITE', 'youmightry.com');
define('PATH_CURRENT_SITE', '/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);

define('WP_MEMORY_LIMIT', '256MB');

thank you for your editing and your comments! :) great ideas! I forgot to mention that my hosting is Linux hosting.. and I am looking into my settings.php file
here is the upload settings section

 </table>
    <h3><?php _e( 'Upload Settings' ); ?></h3>
    <table class="form-table">
        <tr valign="top">
            <th scope="row"><?php _e( 'Site upload space' ) ?></th>
            <td>
            <label><input type="checkbox" id="upload_space_check_disabled" name="upload_space_check_disabled" value="0"<?php checked( get_site_option( 'upload_space_check_disabled' ), 0 ) ?>/> <?php printf( __( 'Limit total size of files uploaded to %s MB' ), '</label><label><input name="blog_upload_space" type="number" min="0" style="width: 100px" id="blog_upload_space" value="' . esc_attr( get_site_option('blog_upload_space', 100) ) . '" />' ); ?></label><br />
            </td>
        </tr>

        <tr valign="top">
            <th scope="row"><label for="upload_filetypes"><?php _e( 'Upload file types' ) ?></label></th>
            <td><input name="upload_filetypes" type="text" id="upload_filetypes" class="large-text" value="<?php echo esc_attr( get_site_option('upload_filetypes', 'jpg jpeg png gif') ) ?>" size="45" /></td>
        </tr>

        <tr valign="top">
            <th scope="row"><label for="fileupload_maxk"><?php _e( 'Max upload file size' ) ?></label></th>
            <td><?php printf( _x( '%s KB', 'File size in kilobytes' ), '<input name="fileupload_maxk" type="number" min="0" style="width: 100px" id="fileupload_maxk" value="' . esc_attr( get_site_option( 'fileupload_maxk', 300 ) ) . '" />' ); ?></td>
        </tr>
    </table> 

Answer 1

Some ideas:

• You should check your php info, just to verify your upload settings (<?php phpinfo();?>)

• You could try a single install, to see if you have the same problems as with multisite.

• You should also try some 3rd party upload script yourself.

• In /wp-includes/script-loader.php I found these lines:

  // common bits for both uploaders
  $max_upload_size = ( (int) ( $max_up = @ini_get('upload_max_filesize') ) < (int) ( $max_post = @ini_get('post_max_size') ) ) ? $max_up : $max_post;
  
  if ( empty($max_upload_size) )
          $max_upload_size = __('not configured');
  

so it is using the minimum of upload_max_filesize and post_max_size. It looks though you have these variables as set as 192MB > 58MB.