diff --git a/homeassistant/components/alexa_devices/config_flow.py b/homeassistant/components/alexa_devices/config_flow.py
index 052873f551d..d75ba39323d 100644
--- a/homeassistant/components/alexa_devices/config_flow.py
+++ b/homeassistant/components/alexa_devices/config_flow.py
@@ -64,7 +64,7 @@ class AmazonDevicesConfigFlow(ConfigFlow, domain=DOMAIN):
                 data = await validate_input(self.hass, user_input)
             except CannotConnect:
                 errors["base"] = "cannot_connect"
-            except CannotAuthenticate:
+            except (CannotAuthenticate, TypeError):
                 errors["base"] = "invalid_auth"
             except CannotRetrieveData:
                 errors["base"] = "cannot_retrieve_data"
@@ -110,7 +110,7 @@ class AmazonDevicesConfigFlow(ConfigFlow, domain=DOMAIN):
                 await validate_input(self.hass, {**reauth_entry.data, **user_input})
             except CannotConnect:
                 errors["base"] = "cannot_connect"
-            except CannotAuthenticate:
+            except (CannotAuthenticate, TypeError):
                 errors["base"] = "invalid_auth"
             except CannotRetrieveData:
                 errors["base"] = "cannot_retrieve_data"
diff --git a/homeassistant/components/alexa_devices/coordinator.py b/homeassistant/components/alexa_devices/coordinator.py
index ac033a487ee..7807c6f0efd 100644
--- a/homeassistant/components/alexa_devices/coordinator.py
+++ b/homeassistant/components/alexa_devices/coordinator.py
@@ -66,7 +66,7 @@ class AmazonDevicesCoordinator(DataUpdateCoordinator[dict[str, AmazonDevice]]):
                 translation_key="cannot_retrieve_data_with_error",
                 translation_placeholders={"error": repr(err)},
             ) from err
-        except CannotAuthenticate as err:
+        except (CannotAuthenticate, TypeError) as err:
             raise ConfigEntryAuthFailed(
                 translation_domain=DOMAIN,
                 translation_key="invalid_auth",