Firefox Community Forum

Ordered some new checks from Costco as a "guest" since I haven't set up an online account (generally speaking, I wouldn't use, but to order checks, I need to do it online - not in the store). I put my full order together in the cart, went through the full process of completing the order and payment, but after submitting, I expected the order confirmation page. However, I received the notice that the Harland Clarke check printing vendor site won't allow firefox to display the page. Without that confirmation page, I don't have an order number to reference. The instructions provided says to embed the link (which link?) in another tab to open the missing page. I've also tried following all other instructions; going on the Mozilla/Firefox desktop/ trying to find a Mozilla contact phone number, etc. All that happens is that I go into a never-ending circle - which means no-where. What am I missing? This is what I get:

Fix error “Website will not allow Firefox to display the page.” 3–4 minutes

Firefox, Firefox for Android Firefox, Firefox for Android Last updated: 8/24/25 36% of users voted this helpful

Some websites don’t allow their content to appear inside another website. If a site tries to embed a page that blocks this, Firefox will show an error that it cannot open the page:

“To protect your security, [website] will not allow Firefox to display the page if another site has embedded it.”

This is a security feature on the website being embedded. It prevents clickjacking, where a site tries to load another site without permission, often to trick users into clicking something they didn’t intend.

This error is not caused by Firefox. It’s a choice made by the website owner. Why does this happen?

Websites can control how their content is used. They may block it from being shown inside another site using special security settings like:

   X-Frame options headers
   Content security policy rules 

These settings are common for banking sites, schools, government services and others that need tight security. What can I do?

You can still view the blocked content by opening it directly. On desktop

   Right-click the link or embedded area.
   Select Open Link in New Tab or Open Link in New Window.
   If you can’t right-click, try copying the link (long-press on Mac trackpads) and pasting it into a new tab. 

Tip: You can also drag the link into a new tab if using Firefox on desktop. On mobile (phone or tablet)

   Tap and hold the link or embedded area (where the content should appear).
   Choose Open in New Tab from the menu.
   If that doesn’t work, try copying the link (if visible) and pasting it into a new tab manually. 

Warning: On mobile, this may be harder to do if the embedded content doesn’t show clearly. Look for a blank or gray box on the page. What if I need to use the original page?

Sometimes the website that’s embedding the content depends on that embedded page to work properly (for example, a school login system or internal portal).

If that’s the case:

   Try opening the embedded page directly (as described above).
   If that doesn’t help, you may need to contact the site owner and explain the issue. 

Need help understanding this error?

If you're unsure what the page is trying to load or can’t figure out where to click:

   Look for a blank box or missing content; that’s likely where the blocked page should appear.
   If you're on mobile, try rotating your device or zooming out to better view hidden content.
   Still stuck? Copy the page link and share it with your IT support, teacher or website admin. 

Related articles

   Firefox is stuck in Troubleshoot Mode
   Websites look wrong or appear differently than they should
   Site Permissions panel 

These fine people helped write this article:

After my last Firefox upgrade install I can no longer access both The Home Depot and Lowes websites. This is the message I get when trying to access the Lowes web page search:

Access Denied You don't have permission to access "http://www.lowes.com/Search=windows&catalog=4294772368&ac=true" on this server.

Reference #18.66d3e17.1771951467.1c7d8fff

https://errors.edgesuite.net/18.66d3e17.1771951467.1c7d8fff

Downloaded recent Firefox update. Restarted PC. Logged into a site I use (and need this season). I could not even use a saved bookmark for login page. Cannot log in to it.

I added the site under Firefox settings option.

I tried logging in with Private mode, where I was able to use bookmark for login page. HOWEVER, I quickly experienced issues and got attached warnings. I reported 'site not working' on the debug option. While this usually immediately fixes a problem, it did nothing at all.

This is why I am always AFRAID of installing the "Updates" - I frequently lose functions. It takes as TREMENDOUS amount of time to fix them and there is no "help button" on Firefox or Mozilla to scan issue and fix it.

Whenever i go on my yahoo mail I get a security alert that says: we have prevented your access to cowhuntforenenst.com I have run my anti virus and malwarebites thinking it may be a virus but it didn't come up as one. And it's only happening on firefox not other browsers. Is there a way to fix this?

After ordering eye glasses from goggles4U. I am unable to connect to eyebuydirect.com website. I get this message. Access Denied You don't have permission to access "http://www.eyebuydirect.com/" on this server.

Reference #18.19931ab8.1772151340.7fd25c8

https://errors.edgesuite.net/18.19931ab8.1772151340.7fd25c8

I had a tab open to eyebuydirect.com when I was ordering from goggles4U. I was getting my prescription from eyebuydirect.com.

Please tell me how to get whatever is blocking this website off my computer.

I am running windows 7pro.

Unable to access three sites (so far): MacOS9Lives.com, 68kmla.com and wycokck.com. I keep getting this response: "An error occurred during a connection...". Or in the case of the local city government's website (wycokck.org). I get a message that I am not authorized to access it. All other bookmarks tested here seem to function properly.

Google Fiber customer (GFiber) using the Nest Wifi Pro mesh system which reports a "Great" connection via all (3) access points.

Hi,

Firefox won't allow me to open www.Haaretz.com It responds with the message below. I have emptied the cache, restarted firefox, nothing worked. Please explain why this is happening and how I can fix it.

Thank you!

Error 403 Forbidden

Forbidden Error 54113

Details: cache-ewr-kewr1740098-EWR 1775692014 80179143

Varnish cache server

Hi, I have firefox on my desktop, and I want to watch the "10 App" - which is an Australian broadcasting tv channel - but it keep saying " an ad blocker is stopping the app from working" I also tried their website, and the same thing happens. I tried to check the extensions there is no ad blocker ! can you please advise me how to add permission to this particular app/website. ? and where do I find this adblocker ? thanks.