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 <noreply@anthropic.com>
This commit is contained in:
Nexoniarz 2026-10-02 21:01:23 +02:00
commit 15017f8098

View file

@ -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.