diff --git a/src/chat/chat_sync.c b/src/chat/chat_sync.c
index e00f5e9c1..1be142193 100644
--- a/src/chat/chat_sync.c
+++ b/src/chat/chat_sync.c
@@ -1608,11 +1608,32 @@ static void cs_pending_prune(struct chat_sync* cs) {
     }
 }
 
+void chat_sync_revalidate_join(struct UTUN_INSTANCE* inst, uint64_t group) {
+    struct chat_sync* cs = cs_of(inst);
+    if (!cs || !cs->initialized) return;
+    struct join_pending** link = &cs->join_pending;
+    while (*link) {
+        struct join_pending* p = *link;
+        uint64_t channel = strtoull(p->ch_id, NULL, 10);
+        if ((group && group != channel) || (topo_group_chat_allowed(inst, channel, p->inviter) &&
+            group_policy_can_invite(inst, p->ch_id, p->inviter) == 1)) { link = &p->next; continue; }
+        *link = p->next;
+        DEBUG_INFO(DEBUG_CATEGORY_CHAT_SYNC, "join waiter revoked ch=%s peer=%016llx inviter=%016llx attempt=%016llx", p->ch_id,
+                   (unsigned long long)p->node_id, (unsigned long long)p->inviter, (unsigned long long)p->attempt);
+        int32_t code = CHAT_CONNECT_AUTH;
+        uint8_t error[5] = {CS_MSG_ERROR}; memcpy(error + 1, &code, 4);
+        cs_send_attempt(cs, p->ch_id, p->node_id, error, sizeof(error), p->attempt, &p->route);
+        if (p->route.handle && inst->join_carrier) inst->join_carrier->close(inst->join_carrier->ctx, p->route.handle, 0);
+        u_free(p);
+    }
+}
+
 /* ─── отправка JOIN_READY джойнеру + снятие pending (connection-узел) ─── */
 
 static void cs_send_join_ready(struct chat_sync* cs, const char* ch_id, uint64_t node_id) {
-    if (!topo_node_sqlite_member_allowed(cs->inst->topo_sqlite_db, ch_id, node_id)) return;
     uint64_t group = strtoull(ch_id, NULL, 10);
+    chat_sync_revalidate_join(cs->inst, group);
+    if (!topo_group_chat_allowed(cs->inst, group, node_id)) return;
     uint8_t data[9] = { CS_MSG_JOIN_READY }; memcpy(data + 1, &group, 8);
     int sent = 0;
     struct join_pending** link = &cs->join_pending;
@@ -1644,6 +1665,7 @@ void chat_sync_join_inviter_result(struct UTUN_INSTANCE* inst, uint64_t channel,
     uint64_t attempt, uint64_t node, int result) {
     struct chat_sync* cs = cs_of(inst);
     if (!cs || !cs->initialized) return;
+    chat_sync_revalidate_join(inst, channel);
     char ch[32]; snprintf(ch, sizeof(ch), "%llu", (unsigned long long)channel);
     struct join_pending** link = &cs->join_pending;
     while (*link) {
diff --git a/src/chat/chat_sync.h b/src/chat/chat_sync.h
index 8913a04cd..8af2f5d66 100644
--- a/src/chat/chat_sync.h
+++ b/src/chat/chat_sync.h
@@ -103,6 +103,9 @@ void chat_sync_join_result(struct UTUN_INSTANCE* inst, uint64_t request, uint64_
 /* Подписанный ответ инвайтера на forwarded JOIN. Проверяет inviter, attempt и node ожидающего запроса. */
 void chat_sync_join_inviter_result(struct UTUN_INSTANCE* inst, uint64_t channel, uint64_t inviter,
     uint64_t attempt, uint64_t node, int result);
+/* uasync после commit: отменить ожидания JOIN_READY, если connection/инвайтер потеряли доступ или право приглашать.
+ * group=0 проверяет все каналы. Джойнеру членство до сохранения его записи не требуется. */
+void chat_sync_revalidate_join(struct UTUN_INSTANCE* inst, uint64_t group);
 
 /* uasync: пригласить адресата в свой channel. SERVER-ссылка запускает запрос с add_key и обычным
  * приглашением через self; успех возвращает сервер после своего JOIN. CHANNEL — обычный push-invite.
diff --git a/src/routing_layer/topo_group.c b/src/routing_layer/topo_group.c
index 626ef437f..313a9a892 100644
--- a/src/routing_layer/topo_group.c
+++ b/src/routing_layer/topo_group.c
@@ -34,6 +34,8 @@
 #include "../stream/stream.h"
 #include "../chat/chat_setting.h"
 #include "../chat/group_avatar.h"
+#include "../chat/chat_join.h"
+#include "../chat/chat_sync.h"
 #include "../member_files/member_files.h"
 
 #define TOPO_GROUP_UTUN  0x8000000000000000ULL
@@ -446,6 +448,8 @@ void topo_group_revalidate_members(struct TOPO_GROUP* group) {
     radio_call_revalidate_members(group->instance, group->group_id);
     member_files_revalidate_members(group->instance, group->group_id);
     group_avatar_revalidate_members(group->instance, group->group_id);
+    chat_join_revalidate_members(group->instance, group->group_id);
+    chat_sync_revalidate_join(group->instance, group->group_id);
     /* Удаление вызывает callbacks и меняет список; каждый раз ищем следующего заново. */
     for (;;) {
         struct TOPO_GROUP_CONN_ITEM* invalid = NULL;