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

Second Try Today. I have not been able to access the web via Firefox since your recent upgrade.

  • 2 replies
  • 1 has this problem
  • 1 view
  • Last reply by Hasan

more options

This is my second effort to reach Mozilla help today. Previous attempt to confirm via e-mail said you didn't receive my reply.

My problem with Mozilla is that I cannot access the web since your most-recent update. Your browser forces me to use Google and I do not want to use Google.

It tells me 'An Incompatible Browser Has Been Detected ' or tells me the file cannot be found.

This is my second effort to reach Mozilla help today. Previous attempt to confirm via e-mail said you didn't receive my reply. My problem with Mozilla is that I cannot access the web since your most-recent update. Your browser forces me to use Google and I do not want to use Google. It tells me 'An Incompatible Browser Has Been Detected ' or tells me the file cannot be found.

Modified by cor-el

All Replies (2)

more options

A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.

See:

more options

Cannot connect after upgrading Firefox

https://support.mozilla.com/en-US/kb/Cannot%20connect%20after%20upgrading%20Firefox

Check and tell if its working.