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.

Avatar for Username

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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Website I've used for years now comes up with Blocked by Content Security Policy. This is a survey website of which I have been a member for years. Please help.

  • 2 valiny
  • 1 manana an'ity olana ity
  • 12 views
  • Valiny farany nomen'i cor-el

sharon_j_lake
sharon_j_lake
more options

I have been a member of one of the large survey companies for years. Recently, we bought a new computer and we installed Windows 7, uploaded Firefox and Avast. Up until now, I have had no problems. But when I try to open the link, I get on the page start up window, click the link and get a window that says Blocked by Content Security Policy. I want to be able to do my surveys. How????? Thanks. Sharon

I have been a member of one of the large survey companies for years. Recently, we bought a new computer and we installed Windows 7, uploaded Firefox and Avast. Up until now, I have had no problems. But when I try to open the link, I get on the page start up window, click the link and get a window that says Blocked by Content Security Policy. I want to be able to do my surveys. How????? Thanks. Sharon

All Replies (2)

Wesley Branton
Wesley Branton
more options

Sorry to hear that you are having issues. Are you able to share a link to the website to see if one of the volunteers on this forum with a secure system can check to see if it works on theirs?

The Mixed content blocking in Firefox documentation may also be helpful to read in this situation.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can try these steps in case of issues with web pages:

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • hold down the Shift key and left-click the Reload button
  • press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • press "Command + Shift + R" (Mac)

Clear the Cache and remove the Cookies from websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences).

"Remove the Cookies" from websites that cause problems:

  • Options/Preferences -> Privacy & Security
    Cookies and Site Data -> Manage Data

"Clear the Cache":

  • Options/Preferences -> Privacy & Security
    Cookies and Site Data -> Clear Data -> Cached Web Content: Clear

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window

You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").

Using "Forget About This Site" will remove all data stored in Firefox from this domain like history and cookies and passwords and exceptions and cache, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note.

You can't recover from this 'forget' unless you have a backup of involved files.

If you revisit a 'forgotten' website then data from that website will be saved once again.