Booking Engine shows an error " refused to connect"

Fault description

The browser says it can't open the page because of security, or there's a console error mentioning and X-Frame-Options.

Example 1 (Chrome browser):

Example 2 (Firefox browser):

Example 3 (Console errors):

  • [Error] Refused to display '' in a frame because it set 'X-Frame-Options' to 'sameorigin'.

  • The loading of "" in a frame is denied by "X-Frame-Options" directive set to "sameorigin".

Fault explanation

The Booking Engine Widget is not working because it is not installed correctly on your page. Installing the Booking Engine Widget in any other way than as described in this Guide is not supported and can cause errors such as " refused to connect".

You can try to confirm the Booking Engine Widget is not installed correctly by inspecting the DOM of the page, as follows:

  • Open the page with the Booking Engine Widget and make it show the error

  • Open your browser developer tools with 'DOM/elements inspector'

  • In the inspector, look for any tags like <iframe src="">

  • There shouldn't be any iframe tag with a src attribute pointing to the domain. If you find something like that, the problem could be in the way the Booking Engine Widget is installed. And even if you didn't find anything like that, it's better to check if the Booking Engine Widget is installed correctly.

How to fix it

First decide if you want to use Booking Engine Standalone or Booking Engine Widget (see Ways to integrate). Then go through the relevant installation guide and make sure your page and code is doing everything correctly:

If you are using the Booking Engine Widget, pay special attention to the Requirements section of the Booking Engine Widget Getting started guide, it has a list of things to do and a list of common mistakes that can occur during installation.

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