[Fixed] iframe error with ch-ua-form-factor Cookie Permission – Iframe

The Problem:

An embedded iframe in a webpage is encountering an error related to the ‘ch-ua-form-factor’ Cookie Permission. This error occurs when the iframe’s source is set to ‘www.youtube-nocookie.com’. Removing the iframe options or changing the source to ‘www.youtube.com’ does not resolve the issue. The error persists, indicating that it may be related to the screen size configuration of the parent webpage.

The Solutions:

Solution 2: ch-ua-form-factor Permission Policy

This error signals an unrecognized permission policy header. To resolve it, add the ch-ua-form-factor permission policy to the request header on your server. This can be done as follows:

res.setHeader('Permissions-Policy', 'ch-ua-form-factor');

Solution 3: Chrome’s User-Agent Reduction Trial

Chrome’s User-Agent reduction trial is over, and Chrome versions 113+ do not permit the Accept-CH request. Chrome started using Sec-CH-UA-Form-Factor in Chrome 89. Versions 103–112 were part of the deprecation trial, where websites could register to continue to receive the full UA string.

It is possible that YouTube needs to migrate to the User Agent Client Hints (UA-CH) specification and send Accept-CH: Sec-CH-UA-Form-Factor rather than trying to get CH-UA-Form-Factor.

Video Explanation:

The following video, titled "Permissions Policy Security Header For Joomla - MM #169 - YouTube", provides additional insights and in-depth exploration related to the topics discussed in this post.

The Permissions Policy Header allows site owners to enable and disable certain web platform features on their own ...