Firefox no longer works after upgrading to macOS Sequoia

This appears to be Firewall related but I can’t change the list of apps at the start of my firewall. They appear to be locked. I can’t click and minus them and I can’t change the setting from block to allow or vice versa.

Anyone else run into this?

terminal: /usr/libexec/ApplicationFirewall/socketfilterfw --add /Applications/Firefox.app

In Mac OS Settings:

Settings > Privacy & Security > Local Network

Set the slider for access - I had the same issue with Chrome

Happened to me, if you have your firewall on then you have to turn off your firewall and everything else will work.

If you have your firewall off before this then you have to turn it on to work, weird but it works.

Having the same issue for http sites. Running ‘/usr/libexec/ApplicationFirewall/socketfilterfw --add /Applications/Firefox.app’ did not change anything for me.

I am having this issue. How do i fix it?

Having this issue as well, every few minutes no traffic works in firefox, then it randomly starts working again.

If running /usr/libexec/ApplicationFirewall/socketfilterfw --add /Applications/Firefox.app doesn’t work for you, it is likely because your macOS firewall settings reference the system bundle identifier (org.mozilla.firefox) instead of the file system path to the Firefox application bundle (/Applications/Firefox.app). If that is the case (as it was for me), the below terminal command should work:

/usr/libexec/ApplicationFirewall/socketfilterfw --unblockapp "org.mozilla.firefox"

Some other Apps don’t work, Apple Music for instance. Holy moly.

No problems at all here. Firefox does function as yesterday under Sonoma. I only found that Adobe Digital Editions behaves oddly and some plugins for quicklook have stopped to run. That’s all.

I have Firefox allowed but the connection is hit and miss. It works, stalls, works, stalls. The same happens on my Tailscale connection. It stays connected but speed is slow and sometimes stalls.

Switching off firewall helped some anyway.

Go to Settings / Privacy and Security / Local Network and turn on/off the desired application.

I got same issue. pls try change firefox proxy setting, change it to no-proxy. that fix my issue.

And I still wonder how to remove these firewall rules, which cannot change/update.

I have these issues with Microsoft RDP and Zoom not working.

The solution posted by [this poster](https://www.reddit.com/r/mac/comments/1fif1gr/comment/lnlbxsy/) fixed the problem. Zoom would have blocked incoming and can’t be changed, adding the rule has changed it to allow incoming but setting is still immutable. I think either Sequoia needs an update on this or Zoom app needs to be updated.

i typed my password and now my mac is completely frozen lol, i love software updates

When I access Privacy&Security → Local Network I see a partial list of installed applications. Unfortunately there is no ‘+ -’ toolbar one would expect for such a system setting to add or subtract applications.

thanks for posting this

I turned off Express VPN and Firefox worked. I turned Express VPN back on but turned Location Services off for Firefox and Firefox worked again. No idea.

How do you download Firefox onto mac officially?

I was able to get it to work with
/usr/libexec/ApplicationFirewall/socketfilterfw --unblock /Applications/Firefox.app

it may have largley the same function as your command