Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

This thread was archived. Please ask a new question if you need help.

Why won't http://xfinity.comcast.net/ let me sign in using the newest version of Firefox? It worked yesterday, and it works with Chrome.

kboehmcomcast
kboehmcomcast
more options

I have used Firefox for years. I have Comcast email. Yesterday, after the browser update, the following happened:

1) xfinity.comcast.net said, "Uh-oh, it looks like you're not signed in." 2) I signed in and the browser opened a tab that says "Kathy..signed in...My Account," etc. In other words, it looks like I'm signed in. 3) When I click on my email, I get a new tab that says, "Uh-oh, it looks like you're not signed in."

The only way I can read my email is to use Chrome. I'm unhappy about that. Is there anything I can try? Thanks, Kathy Boehm

I have used Firefox for years. I have Comcast email. Yesterday, after the browser update, the following happened: 1) xfinity.comcast.net said, "Uh-oh, it looks like you're not signed in." 2) I signed in and the browser opened a tab that says "Kathy..signed in...My Account," etc. In other words, it looks like I'm signed in. 3) When I click on my email, I get a new tab that says, "Uh-oh, it looks like you're not signed in." The only way I can read my email is to use Chrome. I'm unhappy about that. Is there anything I can try? Thanks, Kathy Boehm

Chosen solution

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:

  1. Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
  2. Under "Time range to clear", select "Everything".
  3. Now, click the arrow next to Details to toggle the Details list active.
  4. From the details list, check Cache and Cookies and uncheck everything else.
  5. Now click the Clear now button.

Further information can be found in the Clear your cache, history and other personal information in Firefox article.

Did this fix your problems? Please report back to us!

Read this answer in context 👍 2

All Replies (2)

the-edmeister
the-edmeister
  • Moderator
more options

Chosen Solution

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:

  1. Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
  2. Under "Time range to clear", select "Everything".
  3. Now, click the arrow next to Details to toggle the Details list active.
  4. From the details list, check Cache and Cookies and uncheck everything else.
  5. Now click the Clear now button.

Further information can be found in the Clear your cache, history and other personal information in Firefox article.

Did this fix your problems? Please report back to us!

kboehmcomcast
kboehmcomcast Question owner
more options

This fixed my problem. Thanks!