diff --git a/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDeviceManager.py b/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDeviceManager.py
index f233e59fe5..8a87438b0e 100644
--- a/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDeviceManager.py
+++ b/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDeviceManager.py
@@ -26,6 +26,9 @@ class CloudOutputDeviceManager:
     API spec is available on https://api.ultimaker.com/docs/connect/spec/.
     """
 
+    SYNC_TIMEOUT = 50.0
+    """seconds. Adding many different kinds of printers can take a long time"""
+
     META_CLUSTER_ID = "um_cloud_cluster_id"
     META_NETWORK_KEY = "um_network_key"
     SYNC_SERVICE_NAME = "CloudOutputDeviceManager"
@@ -46,7 +49,13 @@ class CloudOutputDeviceManager:
         # Ensure we don't start twice.
         self._running = False
 
-        self._syncing = False
+        # Unfortunately, not all cases of a failed request result in an error callback, such as VPN connection
+        # being broken or possibly switching wifi networks. Better solution: Refactor CloudApiClient to use
+        # HttpRequestManager, which supports timeout.
+        self._sync_timeout_timer = QTimer()
+        self._sync_timeout_timer.setInterval(int(self.SYNC_TIMEOUT * 1000))
+        self._sync_timeout_timer.setSingleShot(True)
+        self._sync_timeout_timer.timeout.connect(self._onSyncTimeout)
 
     def start(self):
         """Starts running the cloud output device manager, thus periodically requesting cloud data."""
@@ -84,12 +93,13 @@ class CloudOutputDeviceManager:
     def _getRemoteClusters(self) -> None:
         """Gets all remote clusters from the API."""
 
-        if self._syncing:
+        if self._sync_timeout_timer.isActive():
+            # A sync is running
             return
 
         Logger.info("Syncing cloud printer clusters")
 
-        self._syncing = True
+        self._sync_timeout_timer.start()
         self._account.setSyncState(self.SYNC_SERVICE_NAME, SyncState.SYNCING)
         self._api.getClusters(self._onGetRemoteClustersFinished, self._onGetRemoteClusterFailed)
 
@@ -115,12 +125,10 @@ class CloudOutputDeviceManager:
             # If the removed device was active we should connect to the new active device
             self._connectToActiveMachine()
 
-        self._syncing = False
-        self._account.setSyncState(self.SYNC_SERVICE_NAME, SyncState.SUCCESS)
+        self._onSyncFinished(True)
 
     def _onGetRemoteClusterFailed(self):
-        self._syncing = False
-        self._account.setSyncState(self.SYNC_SERVICE_NAME, SyncState.ERROR)
+        self._onSyncFinished(False)
 
     def _onDevicesDiscovered(self, clusters: List[CloudClusterResponse]) -> None:
         """**Synchronously** create machines for discovered devices
@@ -223,6 +231,19 @@ class CloudOutputDeviceManager:
         if device.key in output_device_manager.getOutputDeviceIds():
             output_device_manager.removeOutputDevice(device.key)
 
+    def _onSyncTimeout(self):
+        Logger.warning("Cloud printer sync timed out after {} seconds".format(self.SYNC_TIMEOUT))
+        self._onSyncFinished(False)
+
+    def _onSyncFinished(self, success: bool):
+        if self._sync_timeout_timer.isActive():
+            self._sync_timeout_timer.stop()
+
+        if success:
+            self._account.setSyncState(self.SYNC_SERVICE_NAME, SyncState.SUCCESS)
+        else:
+            self._account.setSyncState(self.SYNC_SERVICE_NAME, SyncState.ERROR)
+
     def _createMachineFromDiscoveredDevice(self, key: str, activate: bool = True) -> None:
         device = self._remote_clusters[key]
         if not device:
@@ -277,4 +298,4 @@ class CloudOutputDeviceManager:
 
         output_device_manager = CuraApplication.getInstance().getOutputDeviceManager()
         if device.key not in output_device_manager.getOutputDeviceIds():
-            output_device_manager.addOutputDevice(device)
\ No newline at end of file
+            output_device_manager.addOutputDevice(device)