From 8e1a04dc8249c76a5f480176f5c19b45f1bd96f3 Mon Sep 17 00:00:00 2001
From: Franck Nijhof <git@frenck.dev>
Date: Sun, 17 May 2026 22:41:26 +0200
Subject: [PATCH] Fix Verisure alarm crash when cloud rejects arm/disarm
 command (#171024)

---
 homeassistant/components/verisure/alarm_control_panel.py | 9 +++++++++
 homeassistant/components/verisure/strings.json           | 5 +++++
 2 files changed, 14 insertions(+)

diff --git a/homeassistant/components/verisure/alarm_control_panel.py b/homeassistant/components/verisure/alarm_control_panel.py
index a01f608bc42c..33410ca1a301 100644
--- a/homeassistant/components/verisure/alarm_control_panel.py
+++ b/homeassistant/components/verisure/alarm_control_panel.py
@@ -11,6 +11,7 @@ from homeassistant.components.alarm_control_panel import (
     CodeFormat,
 )
 from homeassistant.core import HomeAssistant, callback
+from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers.device_registry import DeviceInfo
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
@@ -65,6 +66,12 @@ class VerisureAlarm(
             self.coordinator.verisure.request, command_data
         )
         LOGGER.debug("Verisure set arm state %s", state)
+        if arm_state is None or "data" not in arm_state:
+            await self.coordinator.async_refresh()
+            raise HomeAssistantError(
+                translation_domain=DOMAIN,
+                translation_key="arm_state_failed",
+            )
         result = None
         attempts = 0
         while result is None:
@@ -79,6 +86,8 @@ class VerisureAlarm(
                     list(arm_state["data"].values())[0], state
                 ),
             )
+            if transaction is None:
+                continue
             result = (
                 transaction.get("data", {})
                 .get("installation", {})
diff --git a/homeassistant/components/verisure/strings.json b/homeassistant/components/verisure/strings.json
index 364f2690e787..797a455d69f6 100644
--- a/homeassistant/components/verisure/strings.json
+++ b/homeassistant/components/verisure/strings.json
@@ -51,6 +51,11 @@
       }
     }
   },
+  "exceptions": {
+    "arm_state_failed": {
+      "message": "Failed to change alarm state. Verify your code is correct and that your account is not temporarily locked."
+    }
+  },
   "options": {
     "step": {
       "init": {