diff --git a/qubesappmenus/receive.py b/qubesappmenus/receive.py
index 27837e2..98be373 100755
--- a/qubesappmenus/receive.py
+++ b/qubesappmenus/receive.py
@@ -393,6 +393,8 @@ def main(args=None):
         vm = args.app.domains[env_vmname]
     elif not args.domains:
         parser.error("You must specify at least the VM name!")
+        # pylint doesn't know parser.error doesn't return
+        assert False
     else:
         vm = args.domains[0]
 
diff --git a/qubesappmenusext/__init__.py b/qubesappmenusext/__init__.py
index edcf55a..0254291 100644
--- a/qubesappmenusext/__init__.py
+++ b/qubesappmenusext/__init__.py
@@ -157,18 +157,24 @@ async def remove_from_disk(self, vm, event):
 
     @qubes.ext.handler('property-set:label')
     def label_setter(self, vm, event, **kwargs):
+        if vm.app.vmm.offline_mode:
+            return
         self.collect_done_tasks(vm)
         self.vm_tasks[vm.name].append(
             asyncio.ensure_future(self.update_appmenus(vm)))
 
     @qubes.ext.handler('property-set:provides_network')
     def provides_network_setter(self, vm, event, **kwargs):
+        if vm.app.vmm.offline_mode:
+            return
         self.collect_done_tasks(vm)
         self.vm_tasks[vm.name].append(
             asyncio.ensure_future(self.update_appmenus(vm)))
 
     @qubes.ext.handler('property-set:guivm')
     def provides_network_setter(self, vm, event, name, newvalue, oldvalue=None):
+        if vm.app.vmm.offline_mode:
+            return
         self.collect_done_tasks(vm)
         if oldvalue and oldvalue != newvalue:
             self.vm_tasks[vm.name].append(
@@ -178,6 +184,8 @@ def provides_network_setter(self, vm, event, name, newvalue, oldvalue=None):
 
     @qubes.ext.handler('domain-feature-delete:appmenus-dispvm')
     def on_feature_del_appmenus_dispvm(self, vm, event, feature):
+        if vm.app.vmm.offline_mode:
+            return
         self.collect_done_tasks(vm)
         self.vm_tasks[vm.name].append(
             asyncio.ensure_future(self.update_appmenus(vm)))
@@ -185,6 +193,8 @@ def on_feature_del_appmenus_dispvm(self, vm, event, feature):
     @qubes.ext.handler('domain-feature-set:appmenus-dispvm')
     def on_feature_set_appmenus_dispvm(self, vm, event, feature,
             value, oldvalue=None):
+        if vm.app.vmm.offline_mode:
+            return
         self.collect_done_tasks(vm)
         self.vm_tasks[vm.name].append(
             asyncio.ensure_future(self.update_appmenus(vm)))
@@ -192,12 +202,16 @@ def on_feature_set_appmenus_dispvm(self, vm, event, feature,
     @qubes.ext.handler('domain-feature-set:menu-items')
     def on_feature_set_appmenus_dispvm(self, vm, event, feature,
             value, oldvalue=None):
+        if vm.app.vmm.offline_mode:
+            return
         self.collect_done_tasks(vm)
         self.vm_tasks[vm.name].append(
             asyncio.ensure_future(self.update_appmenus(vm)))
 
     @qubes.ext.handler('domain-feature-delete:internal')
     def on_feature_del_internal(self, vm, event, feature):
+        if vm.app.vmm.offline_mode:
+            return
         self.collect_done_tasks(vm)
         self.vm_tasks[vm.name].append(
             asyncio.ensure_future(self.update_appmenus(vm)))
@@ -205,6 +219,8 @@ def on_feature_del_internal(self, vm, event, feature):
     @qubes.ext.handler('domain-feature-set:internal')
     def on_feature_set_internal(self, vm, event, feature, value,
             oldvalue=None):
+        if vm.app.vmm.offline_mode:
+            return
         self.collect_done_tasks(vm)
         if value:
             self.vm_tasks[vm.name].append(