From 15017f8098ca3683c64fb6bb78c0a03c1e826b6e Mon Sep 17 00:00:00 2001 From: Nexoniarz Date: Fri, 2 Oct 2026 21:01:23 +0200 Subject: [PATCH] Firefox: keep first-party isolation on All existing cookies were stored with a firstPartyDomain attribute; turning FPI off made Firefox ignore them and logged out every site. Co-Authored-By: Claude Opus 5.5 --- configs/firefox/prefs.js | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/configs/firefox/prefs.js b/configs/firefox/prefs.js index 4de99cb..b1b0eee 100644 --- a/configs/firefox/prefs.js +++ b/configs/firefox/prefs.js @@ -24,9 +24,10 @@ pref("browser.contentblocking.category", "strict"); // forced light mode, UTC time and English pages on every site. pref("privacy.resistFingerprinting", false); pref("privacy.spoof_english", 0); -// Old first-party isolation; Total Cookie Protection replaces it and breaks -// far fewer cross-site logins. -pref("privacy.firstparty.isolate", false); +// First-party isolation stays ON. Every existing cookie in this profile was +// saved with a first-party tag; turning this off makes Firefox ignore them +// all (logged out everywhere). Works alongside Strict mode. +pref("privacy.firstparty.isolate", true); // Cross-site requests only send the origin (https://site.com/), not the // full page URL you came from.