diff --git a/plugins/UM3NetworkPrinting/src/Messages/LegacyDeviceNoLongerSupportedMessage.py b/plugins/UM3NetworkPrinting/src/Messages/LegacyDeviceNoLongerSupportedMessage.py
index a26c65ba29..f4132dbcbc 100644
--- a/plugins/UM3NetworkPrinting/src/Messages/LegacyDeviceNoLongerSupportedMessage.py
+++ b/plugins/UM3NetworkPrinting/src/Messages/LegacyDeviceNoLongerSupportedMessage.py
@@ -7,14 +7,27 @@ from UM.Message import Message
 I18N_CATALOG = i18nCatalog("cura")
 
 
-## Message shown when uploading a print job to a cluster is blocked because another upload is already in progress.
+## Message shown when trying to connect to a legacy printer device.
 class LegacyDeviceNoLongerSupportedMessage(Message):
     
+    # Singleton used to prevent duplicate messages of this type at the same time.
+    __is_visible = False
+    
     def __init__(self) -> None:
         super().__init__(
-                text = I18N_CATALOG.i18nc("@info:status", "You are attempting to connect to a printer that is not "
-                                                          "running Ultimaker Connect. Please update the printer to the "
-                                                          "latest firmware."),
-                title = I18N_CATALOG.i18nc("@info:title", "Update your printer"),
-                lifetime = 10
+            text = I18N_CATALOG.i18nc("@info:status", "You are attempting to connect to a printer that is not "
+                                                      "running Ultimaker Connect. Please update the printer to the "
+                                                      "latest firmware."),
+            title = I18N_CATALOG.i18nc("@info:title", "Update your printer"),
+            lifetime = 10
         )
+
+    def show(self) -> None:
+        if LegacyDeviceNoLongerSupportedMessage.__is_visible:
+            return
+        super().show()
+        LegacyDeviceNoLongerSupportedMessage.__is_visible = True
+
+    def hide(self, send_signal = True) -> None:
+        super().hide(send_signal)
+        LegacyDeviceNoLongerSupportedMessage.__is_visible = False
diff --git a/plugins/UM3NetworkPrinting/src/Messages/NotClusterHostMessage.py b/plugins/UM3NetworkPrinting/src/Messages/NotClusterHostMessage.py
new file mode 100644
index 0000000000..10c2f1c9b4
--- /dev/null
+++ b/plugins/UM3NetworkPrinting/src/Messages/NotClusterHostMessage.py
@@ -0,0 +1,33 @@
+# Copyright (c) 2019 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+from UM import i18nCatalog
+from UM.Message import Message
+
+
+I18N_CATALOG = i18nCatalog("cura")
+
+
+## Message shown when trying to connect to a printer that is not a host.
+class NotClusterHostMessage(Message):
+    
+    # Singleton used to prevent duplicate messages of this type at the same time.
+    __is_visible = False
+    
+    def __init__(self) -> None:
+        super().__init__(
+            text = I18N_CATALOG.i18nc("@info:status", "You are attempting to connect to a printer that is not "
+                                                      "the host of an Ultimaker Connect group. Please connect to "
+                                                      "the host instead."),
+            title = I18N_CATALOG.i18nc("@info:title", "Not a cluster host"),
+            lifetime = 10
+        )
+
+    def show(self) -> None:
+        if NotClusterHostMessage.__is_visible:
+            return
+        super().show()
+        NotClusterHostMessage.__is_visible = True
+
+    def hide(self, send_signal = True) -> None:
+        super().hide(send_signal)
+        NotClusterHostMessage.__is_visible = False
diff --git a/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDeviceManager.py b/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDeviceManager.py
index 29f21847d6..b5f0c3bb4b 100644
--- a/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDeviceManager.py
+++ b/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDeviceManager.py
@@ -16,6 +16,7 @@ from .LocalClusterOutputDevice import LocalClusterOutputDevice
 from ..UltimakerNetworkedPrinterOutputDevice import UltimakerNetworkedPrinterOutputDevice
 from ..CloudFlowMessage import CloudFlowMessage
 from ..Messages.LegacyDeviceNoLongerSupportedMessage import LegacyDeviceNoLongerSupportedMessage
+from ..Messages.NotClusterHostMessage import NotClusterHostMessage
 from ..Models.Http.PrinterSystemStatus import PrinterSystemStatus
 
 
@@ -128,8 +129,6 @@ class LocalClusterOutputDeviceManager:
 
     ## Add a new device.
     def _onDeviceDiscovered(self, key: str, address: str, properties: Dict[bytes, bytes]) -> None:
-        cluster_size = int(properties.get(b"cluster_size", -1))
-        firmware_version = Version(properties.get(b"firmware", "1.0.0"))
         machine_identifier = properties.get(b"machine", b"").decode("utf-8")
         printer_type_identifiers = self._getPrinterTypeIdentifiers()
 
@@ -140,10 +139,6 @@ class LocalClusterOutputDeviceManager:
                 properties[b"printer_type"] = bytes(p_type, encoding="utf8")
                 break
 
-        # We no longer support legacy devices, prevent them from showing up in the discovered devices list.
-        if cluster_size == -1 or firmware_version < self.MIN_SUPPORTED_CLUSTER_VERSION:
-            return
-
         device = LocalClusterOutputDevice(key, address, properties)
         CuraApplication.getInstance().getDiscoveredPrintersModel().addDiscoveredPrinter(
             ip_address=address,
@@ -210,11 +205,16 @@ class LocalClusterOutputDeviceManager:
 
     ## Add a device to the current active machine.
     def _connectToOutputDevice(self, device: UltimakerNetworkedPrinterOutputDevice, machine: GlobalStack) -> None:
-        
+
         # Make sure users know that we no longer support legacy devices.
-        if device.clusterSize < 1 or Version(device.firmwareVersion) < self.MIN_SUPPORTED_CLUSTER_VERSION:
+        if Version(device.firmwareVersion) < self.MIN_SUPPORTED_CLUSTER_VERSION:
             LegacyDeviceNoLongerSupportedMessage().show()
             return
+    
+        # Tell the user that they cannot connect to a non-host printer.
+        if device.clusterSize < 1:
+            NotClusterHostMessage().show()
+            return
         
         device.connect()
         machine.addConfiguredConnectionType(device.connectionType.value)