Skip to content

relnote(159): Add 159 release notes #376

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
bsmth merged 1 commit into from
Oct 22, 2026
Merged

relnote(159): Add 159 release notes #376

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 15 additions & 1 deletion release-notes/firefox.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,21 @@

# Firefox release notes for enterprise admins

## 159 - 2026-10-27

_Upcoming, not yet released._

These changes apply to Firefox 159, Firefox ESR 153.6.0 and Firefox Enterprise 159 unless explicitly stated.
Firefox ESR 153 is the current ESR.

### Changes

- [`SignOut`](/reference/policies/signout/): Added `Crash.Action` to define whether users are fully signed out or if the browser is locked when the browser crashes.
Firefox Enterprise only. ([bug 2068950](https://bugzil.la/2068950))
- [`SkipTermsOfUse`](/reference/policies/skiptermsofuse/): Now supported in Firefox Enterprise. ([bug 2074742](https://bugzil.la/2074742))
- [`Cookies`](/reference/policies/cookies/): Cookies for hosts listed in `Block` are now cleared every time the policy is applied, not only when the list changes.
Firefox Enterprise only.

## 158 - 2026-10-13

These changes apply to Firefox 158 and Firefox ESR 153.5.0 unless explicitly stated.
Expand Down Expand Up @@ -39,7 +54,6 @@ Firefox ESR 153 is the current ESR.
### Fixes

- Policy URL fields rejected some valid URLs, such as internationalized domain names, non-ASCII paths and URLs containing spaces. ([bug 2067819](https://bugzil.la/2067819))
Firefox 158 only. ([bug 2065295](https://bugzil.la/2065295))
- [`DisableFirefoxAccounts`](/reference/policies/disablefirefoxaccounts/): The toolbar could report a signed-in account when accounts were disabled.
Firefox 158 only. ([bug 2066062](https://bugzil.la/2066062))
- The Labs quick action in the address bar was still shown when Firefox Labs was turned off with [`UserMessaging`](/reference/policies/usermessaging/), and Manage AI was still shown when `browser.preferences.aiControls` was `false`.
Expand Down
Loading