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.

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

Refreshed Fire fox on windows 10,now can't go to certin websites

  • 5 replies
  • 1 has this problem
  • 10 views
  • Paskiausią atsakymą parašė cor-el

more options

I was having trouble with Zynga and trying to play a game on their site. They gave me advice on how to "refresh" fire fox,and after I did,I now can not go to Zynga's website,or go to Facebook. Seems Firefox has updated to 40.02,and now nothing works! I am using windows 10 .

I was having trouble with Zynga and trying to play a game on their site. They gave me advice on how to "refresh" fire fox,and after I did,I now can not go to Zynga's website,or go to Facebook. Seems Firefox has updated to 40.02,and now nothing works! I am using windows 10 .
Pridėtos ekrano nuotraukos

Chosen solution

Try to disable HTTPS scanning in Avast Web Shield.

Open the Avast dashboard on the affected system.
Select Settings from the left sidebar menu.
Switch to Active Protection.
Click on Customize next to Web Shield.
Uncheck the "Enable HTTPS Scanning" option and click ok.
Skaityti atsakymą kartu su kontekstu 👍 0

All Replies (5)

more options

What security (anti-virus) software do you have?

There is security software like Avast and Kaspersky that intercept secure connections and send their own certificate.

You can try to copy the cert8.db file in the "Old Firefox Data" folder on the desktop to the current profile folder.

You can use this button to go to the current Firefox profile folder:

more options

I use avast...

more options

Chosen Solution

Try to disable HTTPS scanning in Avast Web Shield.

Open the Avast dashboard on the affected system.
Select Settings from the left sidebar menu.
Switch to Active Protection.
Click on Customize next to Web Shield.
Uncheck the "Enable HTTPS Scanning" option and click ok.
more options

Oh Bless You cor-el! That did the trick!! I have been stressing over this all day!!

more options

You're welcome.