Enabling XSendFile causes 404 for images on WordPress Multisite / Network

It wasn’t a .htaccess problem, but an apache configuration problem.

On a Mac server you need to:

  • compile XSendFile as a universal binary: apxs -cia -Wc,"-arch i386 -arch x86_64" -Wl,"-arch i386 -arch x86_64" mod_xsendfile.c and
  • modify the site specific httpd.conf file in /Library/Server/Web/Config/apache2/sites.

If you’re having the same problem, I wrote about this on my blog – hopefully it’s helpful to someone!

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