If I request a non-existent URL, say, /ddddd I get Page not found (as expected). If I do th4 same with an unusual extension /dddd.xcf I also get Page not found.

BUT if I request /ddddd.gif there's an Apache error as opposed to a 404?

I'm guessing this has something to do with security, but can someone clarify this?

  • Just .gif, or .jpg/.png/etc too? What about non-existent .js/.css files outside of sites/default/files? What error are you receiving (code and message)? If it's a 500, I'd wager you've just found a bug – Clive Aug 11 '14 at 15:08

By default drupal serves a different 404 page to save computational effort if it is matching the following regex:


You can configure this in the settings.php (Fast 404 pages) or in the config('system.performance')->get('fast_404.paths');

  • Yes, it was this. I was being asked by someone else, and didn't have a D8 installation to hand. So thanks. – Adaddinsane Aug 11 '14 at 18:27

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