---
slug: "azure-notification-hubs-fcm-legacy-api-retirement"
title: "Azure Notification Hubs: FCM legacy API support deprecation"
summary: "The Azure updates record lists Mar 2027 as the retirement date for Firebase Cloud Messaging (FCM) legacy API support in Azure Notification Hubs. The announcement text states that Google stops supporting FCM legacy HTTP on June 20, 2024."
cloud: "azure"
service: "Azure Notification Hubs"
service_slug: "notification-hubs"
category: "api_sdk"
type: "retirement"
announced_date: "2024-04-19"
effective_date: "2027-03-01"
effective_precision: "month"
replacement: "FCM v1"
affected_versions: []
source_url: "https://azure.microsoft.com/updates?id=support-of-azure-notification-hubs-firebase-cloud-messaging-fcm-legacy-api-will-be-deprecated-by-july-2024"
extra_source_urls: ["https://github.com/Azure/app-service-linux-docs/blob/master/Runtime_Support/php_support.md#end-of-life-for-php-74","https://aka.ms/anhfcmv1"]
vendor_ref: "support-of-azure-notification-hubs-firebase-cloud-messaging-fcm-legacy-api-will-be-deprecated-by-july-2024"
last_checked_at: "2026-11-14T03:00:26.311Z"
created_at: "2026-11-14T05:35:48.441Z"
updated_at: "2026-11-14T05:35:48.441Z"
url: "https://eolwatch.dev/items/azure-notification-hubs-fcm-legacy-api-retirement"
short_url: "https://eolwatch.dev/i/f0"
markdown_url: "https://eolwatch.dev/items/azure-notification-hubs-fcm-legacy-api-retirement.md"
json_url: "https://eolwatch.dev/items/azure-notification-hubs-fcm-legacy-api-retirement.json"
source_note: null
---

# Azure Notification Hubs: FCM legacy API support deprecation

The Azure updates record lists Mar 2027 as the retirement date for Firebase Cloud Messaging (FCM) legacy API support in Azure Notification Hubs. The announcement text states that Google stops supporting FCM legacy HTTP on June 20, 2024.

- Effective date: Mar 2027 (month precision: the vendor gives no day)
- Cloud: [Azure](https://eolwatch.dev/cloud/azure.md)
- Service: [Azure Notification Hubs](https://eolwatch.dev/services/azure/notification-hubs.md)
- Type: Retirement
- Category: [API or SDK](https://eolwatch.dev/categories/apis-sdks.md)
- Replacement: FCM v1
- Announced: 19 Apr 2024
- Official source: [azure.microsoft.com](https://azure.microsoft.com/updates?id=support-of-azure-notification-hubs-firebase-cloud-messaging-fcm-legacy-api-will-be-deprecated-by-july-2024)
- Last checked: 14 Nov 2026

## What breaks

FCM is used to send push notifications to Google Play supported Android devices, and Azure Notification Hubs previously communicated with FCM using the Legacy HTTP protocol. The announcement states that Google stops supporting FCM legacy HTTP on June 20, 2024, and that the FCM legacy API is deprecated by July 2024. It states that all customers must migrate applications and notification payloads to the new format (FCM v1) before June 20, 2024, and asks them to follow the migration steps before 1 June 2024. The announcement text does not mention Mar 2027; that date comes from the Azure updates record.

## What to do

Migrate your applications and notification payloads to the new format (FCM v1). The announcement asks customers to follow the FCM v1 migration steps before 1 June 2024. Questions can be posted at Microsoft Q&A: [https://aka.ms/anhfcmv1](https://aka.ms/anhfcmv1).

## Replacement

FCM v1

## Sources

- [Official source](https://azure.microsoft.com/updates?id=support-of-azure-notification-hubs-firebase-cloud-messaging-fcm-legacy-api-will-be-deprecated-by-july-2024) (azure.microsoft.com, Official)
- [Additional source](https://github.com/Azure/app-service-linux-docs/blob/master/Runtime_Support/php_support.md#end-of-life-for-php-74) (github.com, Official)
- [Additional source](https://aka.ms/anhfcmv1) (aka.ms, Official)

Last checked against the first source in this list on 14 Nov 2026.

Page: https://eolwatch.dev/items/azure-notification-hubs-fcm-legacy-api-retirement | JSON: https://eolwatch.dev/items/azure-notification-hubs-fcm-legacy-api-retirement.json

The text on this page is drafted with AI assistance from the vendor's text, checked against the official source and approved by a person before it is published.