Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Buscar en Ayuda

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

Why did Firefox prevent a page from loading when it was fine a month ago?

more options

When using Verified by Visa to reload my Tim's card, I got the following message:

Blocked by Content Security Policy

This page has a content security policy that prevents it from being loaded in this way.

Firefox prevented this page from loading in this way because the page has a content security policy that disallows it.


How can this be fixed?

When using Verified by Visa to reload my Tim's card, I got the following message: Blocked by Content Security Policy This page has a content security policy that prevents it from being loaded in this way. Firefox prevented this page from loading in this way because the page has a content security policy that disallows it. How can this be fixed?

Todas las respuestas (2)

more options

The website probably tries to load a page in an iframe and the website you try to embed has policy rules that prohibit this. The server would would have to make sure to send the proper HTTP response headers.

You can try to right-click this iframe and use "This Frame > Open Frame in New Tab".


See also:

more options