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.

How can I go backwards - just tried 50.0.1 and now can not access net

  • 1 reply
  • 1 has this problem
  • 3 views
  • Last reply by cor-el

MartyKOhio
MartyKOhio
more options

Running win 10 -- just upgraded -- restarted Firefox and it worked. Turned off my computer - turned back on and the browser says "Unable to connect.". Connection appears to be fine -- I can use internet on another computer

Running win 10 -- just upgraded -- restarted Firefox and it worked. Turned off my computer - turned back on and the browser says "Unable to connect.". Connection appears to be fine -- I can use internet on another computer

Chosen solution

It is possible that your firewall or other security software 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 and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to install for Firefox and the plugin-container process and the updater process.

See:

Read this answer in context 👍 0

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Chosen Solution

It is possible that your firewall or other security software 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 and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to install for Firefox and the plugin-container process and the updater process.

See: