This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

iframe is always blocked!

  • 2 cavab
  • 1 has this problem
  • 4 views
  • Last reply by Tony

more options

Hello,

Our website have "cross-origin isolation" setup, more exactly included the following in response header:

Cross-Origin-Embedder-Policy: credentialless Cross-Origin-Opener-Policy: same-origin

but now, the youtube video which is embeded in iframe is not working(blocked)!

How to solve this problem?

Hello, Our website have "cross-origin isolation" setup, more exactly included the following in response header: Cross-Origin-Embedder-Policy: credentialless Cross-Origin-Opener-Policy: same-origin but now, the youtube video which is embeded in iframe is not working(blocked)! How to solve this problem?

All Replies (2)

more options

Can you link an example or simplified test case?

Did this ever work previously?

more options

Here is a simple test page: https://gogospace.online/test.php

It never worked in Firefox.