diff --git a/backend/src/app/rpc/commands/files.clj b/backend/src/app/rpc/commands/files.clj
index 3f7313291..38aba8f30 100644
--- a/backend/src/app/rpc/commands/files.clj
+++ b/backend/src/app/rpc/commands/files.clj
@@ -351,6 +351,7 @@
 (sv/defmethod ::get-file-fragment
   "Retrieve a file fragment by its ID. Only authenticated users."
   {::doc/added "1.17"
+   ::rpc/auth false
    ::sm/params schema:get-file-fragment
    ::sm/result schema:file-fragment}
   [{:keys [::db/pool] :as cfg} {:keys [::rpc/profile-id file-id fragment-id share-id]}]
diff --git a/frontend/src/app/main/data/viewer.cljs b/frontend/src/app/main/data/viewer.cljs
index af8401d8a..a698e567c 100644
--- a/frontend/src/app/main/data/viewer.cljs
+++ b/frontend/src/app/main/data/viewer.cljs
@@ -74,9 +74,11 @@
           (assoc-in [:viewer-local :interactions-show?] interactions-show?)))
 
     ptk/WatchEvent
-    (watch [_ _ _]
+    (watch [_ state _]
       (rx/of (fetch-bundle (d/without-nils params))
-             (fetch-comment-threads params)))
+             ;; Only fetch threads for logged-in users
+             (when (some? (:profile state))
+               (fetch-comment-threads params))))
 
     ptk/EffectEvent
     (effect [_ _ _]