I cannot get CORS working

  • Posted February 25, 2015

Let me preface this with the fact it’s my first time setting up anything in a cloud server, and my previous knowledge consists of doing a local WAMP stack and using web hosting solutions.

I’ve set up an Ubuntu LAMP Install fine, and what I can’t get to work is the CORS! I suspect the module headers, because I don’t seem to get any change on my response headers. I’ve enabled the mod:

sudo a2enmod headers
sudo service apache2 restart

I tried the same .htaccess I used before doing the migration, but it didn’t work, thus for testing purposes I’m using only:

Header set Access-Control-Allow-Origin "*"

Then I did a apachectl -t, which gives me Syntax OK. The following is an excerpt of an apachectl -M:

headers_module (shared)

It should be working, but it’s not. What am I doing wrong?


Additional information: I figured it’s a subdomain related issue. If the file gets served from I get the right response header, if it gets served from it doesn’t.

I’m currently attempting to determine if it has anything to do with my virtual hosts.

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Answering it myself. Typical “argh I dumbly overlooked this small detail”, it was actually a misconfiguration in the <Directory> for this subdomain in particular.

So, if you get oddities where CORS works for the real path but not a virtual host (subdomain in this case), and this subdomain works fine except for this detail make sure to check if you’ve set everything for Apache right at /etc/apache2/sites-available/, exactly as you did before at 000-default.conf.