How to resove: Firefox prevented this page from loading...
Blocked by Content Security Policy
An error occurred during a connection to www.scribd.com.
"Firefox prevented this page from loading in this way because the page has a content security policy that disallows it." On IE, the message said it cannot be loaded in a FRAME. It's a letter!
I looked at and tried some instructions in Content Blocking. No solutions are there. Thank you.
Todas las respuestas (10)
This isn't about content blocking, but about CSP policy rules. The website tries to load a page in an iframe and that isn't allowed.
- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
- https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy
The only workaround is to open the frame URL in a new tab (right-click: This Frame -> Open Frame in New Tab).
The option to right click to open isn't in Firefox, just IE. If so, it wouldn't bother me.
Thank you.
Hi CiaoBella1, could you share a link to a page where you have this problem?
Hi CiaoBella1, the framed page loads from:
and the page is sent with this header:
content-security-policy: frame-ancestors 'self'
"frame-ancestors" refers to what sites/pages are allowed to embed the content, and 'self' limits the embedding to https://www.scribd.com
That seems like a mistake, but it needs to be fixed by scribd. Until then, you can pop the frame that didn't load into a separate tab using:
right-click > This Frame > Open Frame in New Tab
Ref. https://developer.mozilla.org/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors
I only understand that scribd has the issue.
Pop the frame? Don't understand, but I know that you cannot right click from FF.
I read the letter already. Can I assume it's a one-off issue (or low probability)?
Thank you for your effort and response. You shaved, didn't you?
Hi CiaoBella1, yes, I shaved it.
I'm puzzled about this part:
I know that you cannot right click from FF.
You cannot right-click the "Blocked by Content Security Policy" text and get the context menu? Does it work any better if you hold down the Shift key while right-clicking?
No website was underlined and I could not see that the website was scribd (if I remember correctly). So yes, I could not get any reaction to a potential right-click action. I think I learned from IE that it was scribd.com.
Just went to the website from the link I posted above. Apparently scribd.com fixed their error/s because the letter is now visible on the HR.
Thank you,
screenshot:
Interesting - yes, I am sure the first screen box was what I saw (I've never worked w/it before) and ignored. The developer tools I don't know how to work with at all.
Ahh. Thank you.