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I can't use my xfinity account with Firefox. I can log in but from there everything I click on gets "Access Denied", "You do not have permission..." It won't even let me go to xfinity.com! Xfinity says to contact you, so ...is there a bug being worked on, or a way to troubleshoot the issue? They had me look in More Tools for something about clearing something, but I don't have whatever tool that is in my Firefox 106.0.2 (64-bit). I really don't want to have to install Chrome or reinstall Edge just to pay my cable bill.

I can't use my xfinity account with Firefox. I can log in but from there everything I click on gets "Access Denied", "You do not have permission..." It won't even let me go to xfinity.com! Xfinity says to contact you, so ...is there a bug being worked on, or a way to troubleshoot the issue? They had me look in More Tools for something about clearing something, but I don't have whatever tool that is in my Firefox 106.0.2 (64-bit). I really don't want to have to install Chrome or reinstall Edge just to pay my cable bill.
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Edge is installed regardless what one may think. That's part of the Windows 10 O/S and you can't remove it completely. And why are you using "Private Mode window" is there something wrong with standard Firefox? And until another user whom has xfinity tries the login on Firefox no one will know exactly what is happening.

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Same thing. Since Xfinity rolled out a new portal, if I use Firefox, I get this on the webpage:

Access Denied You don't have permission to access "http://www.xfinity.com/" on this server.

And yes, I cleared the cookies and cache.....and am using the latest version of firefox.....

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The "Access Denied" message with a Reference # is characteristic of a website's perimeter security system, sometimes called a Web Application Firewall. They are designed to prevent bot and other suspicious connections to the website.

Some possible issues to consider:

(A) If you are using a VPN when accessing these sites, try without the VPN.

When you are using a VPN, your IP address is from a remote system used by many strangers. So if that IP address is temporarily banned due to someone else's activity, that also will affect you. If you need the VPN, try selecting a different server or exit node in your VPN software.

(B) If you have customized any privacy preferences that affect browser requests -- for example, modifying your "user agent" or referring site header -- you may need to undo those changes

Also, some add-ons may modify headers in a way that looks suspicious to these systems. We can't really tell how your browser identified itself to the problem site based on how it identified itself to this site, because add-ons are restricted in how they interact with this site. Can you think of any add-ons you use that might make privacy-related tweaks to your requests?

(C) If you have Firefox set not to accept ANY cookies, that also could be a problem for some sites

(D) Maybe your requests are modified by an intermediary (such as a proxy server, your security software, or an interloper)

Although most people are not intentionally using a proxy server, Firefox may discover one set up in your system settings. Sometimes forcing Firefox to ignore those settings helps with weird connection issues. Here's how:

Open the Settings page using either:

  • "3-bar" menu button > Settings
  • (menu bar) Tools > Settings
  • type or paste about:preferences into the address bar and press Enter/Return to load it

In the very tiny search box at the top of the page, type proxy and Firefox should filter to the "Network Settings" section of the page.

Click the Settings button, change the top setting to "No Proxy" and then click the OK button at the bottom of the dialog to save your change.

Any difference?

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