# CORS error: No 'Access-Control-Allow-Origin' header is present **URL:** \ **Category:** Product Support\ **Created:** [March 5, 2017, 12:28pm UTC](https://forum.mautic.org/t/cors-error-no-access-control-allow-origin-header-is-present/7799 "2017-03-05T12:28:48Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Bob](https://avatars.discourse-cdn.com/v4/letter/b/ea666f/32.png) [@Bob](https://forum.mautic.org/u/Bob)\ **Post date:** [March 5, 2017, 12:28pm UTC](https://forum.mautic.org/t/cors-error-no-access-control-allow-origin-header-is-present/7799/1 "2017-03-05T12:28:48Z")
Hi all. I’m experimenting with mautic on a local server. I’ve also got a WordPress site on the same server. I’ve found the js snippet for implimenting tracking, and embedded it in the wp site. When I load the wp site, the mautic resource is successfully requested. However, the console returns a CORS error: Code: XMLHttpRequest cannot load http://mautic.dev/mtc/event. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://wp3.dev' is therefore not allowed access I've gone back to the mautic dashboard, and gone to 'configuration' -\> 'CORS Settings'. At first I added the domain 'wp3.dev.' to the textfield 'Valid Domains'. I then went back to the wp site and reloaded. I still got the error. So I went back to mautic and togged 'Restrict Domains' off. Then I went back to the wp site and reloaded. Alas, the error is still thrown in the browser console. What should my next step be? ---
**Author:** ![Bob](https://avatars.discourse-cdn.com/v4/letter/b/ea666f/32.png) [@Bob](https://forum.mautic.org/u/Bob)\ **Post date:** [March 5, 2017, 12:28pm UTC](https://forum.mautic.org/t/cors-error-no-access-control-allow-origin-header-is-present/7799/2 "2017-03-05T12:28:48Z")
Hi all. I’m experimenting with mautic on a local server. I’ve also got a WordPress site on the same server. I’ve found the js snippet for implimenting tracking, and embedded it in the wp site. When I load the wp site, the mautic resource is successfully requested. However, the console returns a CORS error: ```auto XMLHttpRequest cannot load http://mautic.dev/mtc/event. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://wp3.dev' is therefore not allowed access ``` I’ve gone back to the mautic dashboard, and gone to ‘configuration’ -\> ‘CORS Settings’. At first I added the domain ‘wp3.dev.’ to the textfield ‘Valid Domains’. I then went back to the wp site and reloaded. I still got the error. So I went back to mautic and togged ‘Restrict Domains’ off. Then I went back to the wp site and reloaded. Alas, the error is still thrown in the browser console. What should my next step be? ---
**Author:** ![williamknn](https://avatars.discourse-cdn.com/v4/letter/w/9fc29f/32.png) [@williamknn](https://forum.mautic.org/u/williamknn)\ **Post date:** [September 22, 2017, 3:03am UTC](https://forum.mautic.org/t/cors-error-no-access-control-allow-origin-header-is-present/7799/3 "2017-09-22T03:03:33Z")
Hello, have you solved this issue? If yes, how? Tks. ---
**Author:** ![carlconrad](https://avatars.discourse-cdn.com/v4/letter/c/90db22/32.png) [@carlconrad](https://forum.mautic.org/u/carlconrad)\ **Post date:** [October 6, 2017, 5:08pm UTC](https://forum.mautic.org/t/cors-error-no-access-control-allow-origin-header-is-present/7799/4 "2017-10-06T17:08:51Z")
I removed the trailing / from my domain name and it seems to work. ---
**Author:** ![diegov](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/diegov/32/196_2.png) [@diegov](https://forum.mautic.org/u/diegov)\ **Post date:** [October 7, 2017, 7:42am UTC](https://forum.mautic.org/t/cors-error-no-access-control-allow-origin-header-is-present/7799/5 "2017-10-07T07:42:30Z")
+1 also worked for me.