diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 770e792d..90531ca2 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2026-08-16
+
+- Fixed Firefox "profile cannot be loaded" error on macOS by removing `home.file."Library/Application Support/Firefox/installs.ini"`. Hardcoding an installation hash in `installs.ini` broke whenever Firefox was updated or rebuilt in the Nix store because the nix store path changed, causing Firefox to compute a new installation hash, fail to match or write to the read-only `installs.ini` symlink, and error out. Firefox on macOS uses `profiles.ini` (managed by Home Manager) and `MOZ_LEGACY_PROFILES=1` (exported by nixpkgs' launcher wrapper).
+
 ## 2026-08-03
 
 - Added `presets/security/corporate-ca.nix` (nix-darwin) and enabled it on the
diff --git a/platforms/home-manager/modules/nmasur/presets/programs/firefox.nix b/platforms/home-manager/modules/nmasur/presets/programs/firefox.nix
index 18ec90fd..309281ca 100644
--- a/platforms/home-manager/modules/nmasur/presets/programs/firefox.nix
+++ b/platforms/home-manager/modules/nmasur/presets/programs/firefox.nix
@@ -21,14 +21,6 @@ in
       "okta-browser-plugin"
     ];
 
-    home.file."Library/Application Support/Firefox/installs.ini" = lib.mkIf pkgs.stdenv.isDarwin {
-      text = ''
-        [43AEB1562DAA8804]
-        Default=Profiles/default
-        Locked=1
-      '';
-    };
-
     programs.firefox = {
       enable = true;
       package = pkgs.firefox;