diff --git a/NetworkPrinterOutputDevice.py b/NetworkPrinterOutputDevice.py
index 9bb77c46e1..94ede5add3 100644
--- a/NetworkPrinterOutputDevice.py
+++ b/NetworkPrinterOutputDevice.py
@@ -182,6 +182,11 @@ class NetworkPrinterOutputDevice(PrinterOutputDevice):
 
     def close(self):
         self.setConnectionState(ConnectionState.closed)
+        self._progress_message.hide()
+        self._authentication_requested_message.hide()
+        self._error_message.hide()
+        self._authentication_counter = 0
+        self._authentication_timer.stop()
         self._update_timer.stop()
         self._camera_timer.stop()