diff --git a/homeassistant/components/nextcloud/__init__.py b/homeassistant/components/nextcloud/__init__.py
index 6ca6096458e..269bd96aa31 100644
--- a/homeassistant/components/nextcloud/__init__.py
+++ b/homeassistant/components/nextcloud/__init__.py
@@ -100,6 +100,7 @@ def setup(hass: HomeAssistant, config: ConfigType) -> bool:
         ncm = NextcloudMonitor(conf[CONF_URL], conf[CONF_USERNAME], conf[CONF_PASSWORD])
     except NextcloudMonitorError:
         _LOGGER.error("Nextcloud setup failed - Check configuration")
+        return False
 
     hass.data[DOMAIN] = get_data_points(ncm.data)
     hass.data[DOMAIN]["instance"] = conf[CONF_URL]