diff --git a/cura/CuraActions.py b/cura/CuraActions.py
index ee75665e0b..e585b261d0 100644
--- a/cura/CuraActions.py
+++ b/cura/CuraActions.py
@@ -1,4 +1,8 @@
-from PyQt5.QtCore import QObject, pyqtSignal, pyqtSlot, pyqtProperty
+from PyQt5.QtCore import QObject, pyqtSignal, pyqtSlot, pyqtProperty, QUrl
+from PyQt5.QtGui import QDesktopServices
+
+from UM.Event import CallFunctionEvent
+from UM.Application import Application
 
 import webbrowser
 
@@ -8,8 +12,16 @@ class CuraActions(QObject):
 
     @pyqtSlot()
     def openDocumentation(self):
-        webbrowser.open("http://ultimaker.com/en/support/software")
+        # Starting a web browser from a signal handler connected to a menu will crash on windows.
+        # So instead, defer the call to the next run of the event loop, since that does work.
+        # Note that weirdly enough, only signal handlers that open a web browser fail like that.
+        event = CallFunctionEvent(self._openUrl, [QUrl("http://ultimaker.com/en/support/software")], {})
+        Application.getInstance().functionEvent(event)
 
     @pyqtSlot()
     def openBugReportPage(self):
-        webbrowser.open("http://github.com/Ultimaker/Cura/issues")
+        event = CallFunctionEvent(self._openUrl, [QUrl("http://github.com/Ultimaker/Cura/issues")], {})
+        Application.getInstance().functionEvent(event)
+
+    def _openUrl(self, url):
+        QDesktopServices.openUrl(url)
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