How can I resolve a Cloudflare 404 error on my online webshop?

Shopify Discussion
1

Hello, I just started my online webshop, and after i put the payment options : creditcard, visa etc, the webpage entered a error page :

400 Bad Request

Request Header Or Cookie Too Large

cloudflare

how can i fix this problem? when i try to login, the error is still there.

2

Hello @Angelicpunk !

Thanks for making us aware of your current issue. I will be more than happy to look into this for you.

Are you still experiencing this problem? It could be that the concern is more of a local issue, meaning to say there is something on your device or surrounding circumstances causing this issue, and not on Shopify’s end as we have had no reports of this. Please check your internet connection first. To troubleshoot these problems, I would suggest the following steps below;

  • Clear your cache and cookies on your browser. After this, completely reboot the browser. It might be worth getting the affected customer(s) to clear their cache too.
  • Try a different web browser, as well as incognito or private windows to rule out any browser issues.
  • When using incognito, if you’re still experiencing a delay, confirm you have disabled browser extensions, as these can change how pages function and look.
  • Ensure your web browser is up-to-date on the latest version (we don’t support every browser, but we do support these here).
  • Try another device like a computer or mobile phone.
  • Try on the Shopify Mobile App; this is usually the best step to try, as it will rule out any browser issues.
  • Ensure you do not have any firewalls or pop up blockers enabled on your device, as these can interfere.

Let me know if that solves your issue!