diff --git a/td/telegram/AuthManager.cpp b/td/telegram/AuthManager.cpp
index 2eb77155..5d0ef75a 100644
--- a/td/telegram/AuthManager.cpp
+++ b/td/telegram/AuthManager.cpp
@@ -22,6 +22,7 @@
 #include "td/telegram/PasswordManager.h"
 #include "td/telegram/Td.h"
 #include "td/telegram/TdDb.h"
+#include "td/telegram/TopDialogManager.h"
 #include "td/telegram/UniqueId.h"
 #include "td/telegram/UpdatesManager.h"
 
@@ -562,6 +563,7 @@ void AuthManager::on_authorization(tl_object_ptr<telegram_api::auth_authorizatio
     G()->shared_config().set_option_integer("session_count", auth->tmp_sessions_);
   }
   td->notification_manager_->init();
+  send_closure(td->top_dialog_manager_, &TopDialogManager::do_start_up);
   td->updates_manager_->get_difference("on_authorization");
   td->on_online_updated(false, true);
   td->schedule_get_terms_of_service(0);
diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index c61949e5..c9d0721e 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -8998,7 +8998,7 @@ void MessagesManager::init() {
     channels_notification_settings_.disable_pinned_message_notifications = false;
     channels_notification_settings_.disable_mention_notifications = false;
     channels_notification_settings_.is_synchronized = false;
-    if (!td_->auth_manager_->is_bot()) {
+    if (td_->auth_manager_->is_authorized() && !td_->auth_manager_->is_bot()) {
       send_get_scope_notification_settings_query(NotificationSettingsScope::Channel, Promise<>());
     }
   }
diff --git a/td/telegram/PollManager.cpp b/td/telegram/PollManager.cpp
index 16ea8dcd..3ac6c006 100644
--- a/td/telegram/PollManager.cpp
+++ b/td/telegram/PollManager.cpp
@@ -635,7 +635,7 @@ void PollManager::on_update_poll_timeout(PollId poll_id) {
 }
 
 void PollManager::on_get_poll_results_failed(PollId poll_id) {
-  if (!get_poll_is_closed(poll_id)) {
+  if (!get_poll_is_closed(poll_id) && !td_->auth_manager_->is_bot()) {
     auto timeout = get_polling_timeout();
     LOG(INFO) << "Schedule updating of " << poll_id << " in " << timeout;
     update_poll_timeout_.add_timeout_in(poll_id.get(), timeout);
diff --git a/td/telegram/TopDialogManager.cpp b/td/telegram/TopDialogManager.cpp
index 6c627b68..682239aa 100644
--- a/td/telegram/TopDialogManager.cpp
+++ b/td/telegram/TopDialogManager.cpp
@@ -464,7 +464,16 @@ void TopDialogManager::do_save_top_dialogs() {
 }
 
 void TopDialogManager::start_up() {
-  is_active_ = G()->parameters().use_chat_info_db && !G()->td().get_actor_unsafe()->auth_manager_->is_bot();
+  do_start_up();
+}
+
+void TopDialogManager::do_start_up() {
+  auto auth_manager = G()->td().get_actor_unsafe()->auth_manager_.get();
+  if (auth_manager == nullptr || !auth_manager->is_authorized()) {
+    return;
+  }
+
+  is_active_ = G()->parameters().use_chat_info_db && !auth_manager->is_bot();
   is_enabled_ = !G()->shared_config().get_option_boolean("disable_top_chats");
   update_rating_e_decay();
 
diff --git a/td/telegram/TopDialogManager.h b/td/telegram/TopDialogManager.h
index 8838b0af..1117f125 100644
--- a/td/telegram/TopDialogManager.h
+++ b/td/telegram/TopDialogManager.h
@@ -49,6 +49,8 @@ class TopDialogManager : public NetQueryCallback {
   explicit TopDialogManager(ActorShared<> parent) : parent_(std::move(parent)) {
   }
 
+  void do_start_up();
+
   void on_dialog_used(TopDialogCategory category, DialogId dialog_id, int32 date);
 
   void remove_dialog(TopDialogCategory category, DialogId dialog_id, tl_object_ptr<telegram_api::InputPeer> input_peer);