No 'Access-Control-Allow-Origin'


I created a form with file uploads, some custom code for date pickers and countries. During my first test, I was able to send the form to myself. I wanted to modify some values after this test, and since then I haven’t been able to send anything. On another computer, I managed to send it once by repeatedly clicking the submit button, but since then I haven’t been able to send anything again on either of the two computers.

I am getting this error message…

“Access to XMLHttpRequest at ‘’ from origin ‘’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.”

“POST net::ERR_FAILED 406 (Not Acceptable)”

Here is my site Read-Only: Webflow - HARES PROTECTION

Here is the live : HARES PROTECTION

Thanks for help!

1 Like

Hi There @Samir_Belateche,

I have the same issue !

It seems like this issue is just occuring throughout Webflow, at least thats what it seems like. Unfortunately no one has any help for this as the only solution would be to change the “Access-Control-Allow-Origin:” on the server side to “*”. But as this in most cases does not work, it requires you to look for any work arounds, such as Zapier.

There’ve been a number of posts here regarding form submission problems, including occasional CORS related errors. My total guess would be that part of Webflow’s anti-spam measures has been to add some CORS-related security.

In general that means you’d need to contact support to figure out why your forms are not submitting to their form handler.

That said, you MIGHT check to see if you have a default domain set. CORS works based on the domain you’re making the request from, so if you have multiple domains - even and it’s possible the CORS check has a bug in identifying your post as legitimate.

That’s a full-on shot in the dark, but checking that and republishing is one of the first things I’d try.

Any news on this? Also experiencing the same issue

You’d have to check the forums or contact support for any Webflow team info on this. I did see a post by Nelson in the FB forum indicating that the team was aware some forms submission problems were being reported, but that was several days ago.

I don’t use Webflow’s form submission handler on any projects currently so I wouldn’t know the status myself.