diff --git a/telegram-purple.c b/telegram-purple.c
index 3c1aef8..24ffe1c 100644
--- a/telegram-purple.c
+++ b/telegram-purple.c
@@ -34,6 +34,7 @@ static void update_marked_read (struct tgl_state *TLS, int num, struct tgl_messa
 static void update_on_logged_in (struct tgl_state *TLS);
 static void update_on_ready (struct tgl_state *TLS);
 static void on_user_get_info (struct tgl_state *TLS, void *info_data, int success, struct tgl_user *U);
+static void update_on_failed_login (struct tgl_state *TLS);
 
 const char *config_dir = "telegram-purple";
 const char *user_pk_filename = "server.tglpub";
@@ -56,7 +57,8 @@ struct tgl_update_callback tgp_callback = {
   .secret_chat_update = update_secret_chat_handler,
   .type_notification = update_user_typing,
   .marked_read = update_marked_read,
-  .create_print_name = tgp_blist_create_print_name
+  .create_print_name = tgp_blist_create_print_name,
+  .on_failed_login = update_on_failed_login
 };
 
 static void _update_buddy (struct tgl_state *TLS, tgl_peer_t *user, unsigned flags) {
@@ -521,6 +523,18 @@ static void update_on_ready (struct tgl_state *TLS) {
   tgl_do_update_contact_list (TLS, 0, 0);
 }
 
+static void update_on_failed_login (struct tgl_state *TLS) {
+  info ("update_on_failed_login(): Login to telegram failed.");
+  
+  // 401: SESSION_REVOKED is called when the session is cancelled during runtime
+  // 401: AUTH_KEY_UNREGISTERED is called when logging into a revoked session
+  if (strstr (TLS->error, "SESSION_REVOKED") ||
+      strstr (TLS->error, "AUTH_KEY_UNREGISTERED")) {
+    purple_account_set_bool (tls_get_pa (TLS), TGP_KEY_RESET_AUTH, TRUE);
+  }
+  purple_connection_error (tls_get_conn (TLS), TLS->error);
+}
+
 static void tgprpl_login (PurpleAccount * acct) {
   info ("tgprpl_login(): Purple is telling the prpl to connect the account");
   
@@ -597,6 +611,12 @@ static void tgprpl_login (PurpleAccount * acct) {
   read_auth_file (TLS);
   read_state_file (TLS);
 
+  if (purple_account_get_bool (acct, TGP_KEY_RESET_AUTH, FALSE)) {
+    info ("last login attempt failed, resetting authorization ...");
+    purple_account_set_bool (tls_get_pa (TLS), TGP_KEY_RESET_AUTH, FALSE);
+    bl_do_reset_authorization (TLS);
+  }
+  
   purple_connection_set_state (conn->gc, PURPLE_CONNECTING);
   tgl_login (TLS);
 }
diff --git a/telegram-purple.h b/telegram-purple.h
index a50b20d..b946aa8 100644
--- a/telegram-purple.h
+++ b/telegram-purple.h
@@ -87,6 +87,8 @@
 #define TGP_DEFAULT_SEND_READ_NOTIFICATIONS TRUE
 #define TGP_KEY_SEND_READ_NOTIFICATIONS "send-read-notifications"
 
+#define TGP_KEY_RESET_AUTH "reset-authorization"
+
 extern const char *pk_path;
 extern const char *user_pk_filename;
 extern const char *config_dir;