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Getting Invalid Form Key. Please refresh the page error not able to do any action after upgrade of Magento 2.2.5 to Magento 2.3.

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  • Check this out simicart.com/blog/magento-2-invalid-form-key Commented Feb 13, 2019 at 8:15
  • Are you on local server ? like xampp ? Commented Feb 13, 2019 at 8:19
  • Yes, im using xampp for local Commented Feb 13, 2019 at 8:21
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    What's your base Url ? If its localhost/your-project-name than you can give a try to replace localhost with 127.0.0.1 Run setup:upgrade It should solve your issue. Commented Feb 13, 2019 at 8:28
  • i don't think so its a server issue, because till now i'm using magento 2.2.5 there is no issues when i upgraded to 2.3 then only this issue came. Commented Feb 13, 2019 at 9:49

2 Answers 2

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Finally I got the solution

I have a custom payment method that uses the cc-form to take credit card payments with and without 3dsecure. After placing order with 3dsecure, I am re-directing to 3dsecure page as normal, but on returning from 3dsecure, I am re-directed to the home page with "Invalid Form Key. Please refresh the page why because in Magento 2.3 core payment methods are using CsrfAwareActionInterface for each controller."

So now i have implemented same thing in my custom payment method as below

use Magento\Framework\App\CsrfAwareActionInterface; use Magento\Framework\App\Request\InvalidRequestException; use Magento\Framework\App\RequestInterface; class CustomPaymentResponse extends \Magento\Framework\App\Action\Action implements CsrfAwareActionInterface /** * @inheritDoc */ public function createCsrfValidationException( RequestInterface $request ): ?InvalidRequestException { return null; } /** * @inheritDoc */ public function validateForCsrf(RequestInterface $request): ?bool { return true; } 

Note : you can get reference from core module. Here is the core file path vendor\magento\module-authorizenet\Controller\Directpost\Payment\BackendResponse.php.

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  • I have tried this but this is not working with me . I used a custom payment method (paytab) and the call back url from the payment method is giving me a 302 found and redirects to home page with the same message. Commented Apr 24, 2019 at 7:35
  • Thanks @bangaram you have saved our time. Commented Oct 25, 2019 at 16:45
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    validateForCsrf is there for security reasons! you must not always return true! Commented Nov 5, 2019 at 13:21
  • Its works! Thanks for your post! Commented Oct 14, 2020 at 8:18
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 use Magento\Framework\App\CsrfAwareActionInterface; use Magento\Framework\App\Request\InvalidRequestException; use Magento\Framework\App\RequestInterface; class CustomPaymentResponse extends \Magento\Framework\App\Action\Action implements CsrfAwareActionInterface /** * @inheritDoc */ public function createCsrfValidationException( RequestInterface $request ): ?InvalidRequestException { return null; } /** * @inheritDoc */ public function validateForCsrf(RequestInterface $request): ?bool { return true; } /** * Dispatch request * * @return \Magento\Framework\Controller\ResultInterface|ResponseInterface * @throws \Magento\Framework\Exception\NotFoundException */ public function execute() { //your response check } 

Your response controller should be like this, then only form key issue will fix.

Referrence: https://github.com/magento/magento2/issues/19712

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