diff --git a/src/octoprint/printer/standard.py b/src/octoprint/printer/standard.py
index 5d248cda..03e169cd 100644
--- a/src/octoprint/printer/standard.py
+++ b/src/octoprint/printer/standard.py
@@ -762,6 +762,13 @@ class Printer(PrinterInterface, comm.MachineComPrintCallback):
 			self._analysisQueue.resume() # printing done, put those cpu cycles to good use
 		elif self._comm is not None and state == self._comm.STATE_PRINTING:
 			self._analysisQueue.pause() # do not analyse files while printing
+		elif state == self._comm.STATE_CLOSED or state == self._comm.STATE_CLOSED_WITH_ERROR:
+			if self._comm is not None:
+				self._comm = None
+
+			self._setProgressData(0, None, None, None)
+			self._setCurrentZ(None)
+			self._setJobData(None, None, None)
 
 		self._setState(state)