R2 failed to deliver video

For Workes & Pages, what is the name of the domain?

What is the error message?

Your connection isn’t private Attackers might be trying to steal your information from pub-4fcd6cc427354f30b814176ebedf0984.r2.dev (for example, passwords, messages, or credit cards)

What is the issue or error you’re encountering

the video from R2 does not work

What steps have you taken to resolve the issue?

none, no idea yet

Screenshot of the error

The video works fine at my end and even in this forum post.

Perhaps this needed just a few moments for the correct certificate to be provisioned for the subdomain.

Also, you’re likely going to link a custom domain to the bucket anyway, since the default r2.dev subdomain isn’t meant for production use and can’t benefit from certain Cloudflare WAF/CDN features.