> ## Documentation Index
> Fetch the complete documentation index at: https://moengage-doc-2315-external-css-font-urls.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Configure FCM Authentication for Receiving Push Notifications?

> Configure Firebase Cloud Messaging (FCM) authentication to fix push notification delivery on Android. Resolve sender ID mismatches in MoEngage.

## Problem

Push notifications from the MoEngage dashboard are not received on Android devices due to a sender ID mismatch.

## Instructions

Perform the following steps to configure Firebase Cloud Messaging (FCM) authentication:

1. Open the Firebase console and go to the **Projects settings** section.
2. On the **Service accounts** tab, click **Generate new private key** to download the private key in JSON format, regardless of the selected language.
   <img alt="generate new private key.png" src="https://mintcdn.com/moengage-doc-2315-external-css-font-urls/sPQr3K-d1ig5R-he/images/moengage_9f36c9.png?fit=max&auto=format&n=sPQr3K-d1ig5R-he&q=85&s=ca6976d00628b409549089e840320c93" width="1024" height="715" data-path="images/moengage_9f36c9.png" />
3. Open the downloaded private key JSON file and verify that the project\_id matches the one in your google-services.json file in the root directory of your Android project. <img alt="project id google services.png" src="https://mintcdn.com/moengage-doc-2315-external-css-font-urls/0lMa3ompHczMJAIn/images/moengage_57c032.png?fit=max&auto=format&n=0lMa3ompHczMJAIn&q=85&s=eee313b5400b058725ebb67d6b052acb" width="1024" height="256" data-path="images/moengage_57c032.png" />
   <img alt="project id.png" src="https://mintcdn.com/moengage-doc-2315-external-css-font-urls/RzVW_WVXTZiR-N9L/images/moengage_f89e6f.png?fit=max&auto=format&n=RzVW_WVXTZiR-N9L&q=85&s=55613344d2fe00b32d77b177e483b95e" width="1024" height="310" data-path="images/moengage_f89e6f.png" />
4. On the left navigation menu in the MoEngage dashboard, go to **Settings** > **Channels** > **Push**.
5. On the Push page, click the **App push** tab, and then click **Android (FCM)** tab.
6. Click **Private key file (Recommended)**.
7. Use the **Choose file** button to upload the private key JSON file and click **Save**.   <img alt="choose file.png" src="https://mintcdn.com/moengage-doc-2315-external-css-font-urls/ZfJuHRQ5QJzmarcA/images/moengage_b4ed21.png?fit=max&auto=format&n=ZfJuHRQ5QJzmarcA&q=85&s=68373b6e0816eaaf81c14844b59e9b05" width="1024" height="406" data-path="images/moengage_b4ed21.png" />\
   Now you will see the request body of the report call with the push\_id in the Logcat window of your integrated development environment (IDE), registering the device and project on the MoEngage dashboard.
   <img src="https://mintcdn.com/moengage-doc-2315-external-css-font-urls/BH_MkmkLP52_M1Kh/images/moengage_ec19ed.png?fit=max&auto=format&n=BH_MkmkLP52_M1Kh&q=85&s=a3b7bf3fefc2aee07a432a48f29f2870" alt="register.png" width="1024" height="307" data-path="images/moengage_ec19ed.png" />
8. In the MoEngage dashboard, navigate to **User Profile** > **User Info** > **Reachability** > **Push.** A green tick mark will confirm that the Android device can receive push notifications. <img alt="push reachability edited.png" src="https://mintcdn.com/moengage-doc-2315-external-css-font-urls/edOesIUir9gj8Ram/images/moengage_35ff1e.png?fit=max&auto=format&n=edOesIUir9gj8Ram&q=85&s=8774ff3b156607365e8f577d52438beb" width="1024" height="536" data-path="images/moengage_35ff1e.png" />
9. Click **TEST PUSH**. You will see the **STATUS : SENT** indicating that the device was reachable and the notification was received.
   <img alt="test push edited.png" src="https://mintcdn.com/moengage-doc-2315-external-css-font-urls/BH_MkmkLP52_M1Kh/images/moengage_ec111b.png?fit=max&auto=format&n=BH_MkmkLP52_M1Kh&q=85&s=b8a68ba789b721f77962f13dd97a1dbb" width="1024" height="584" data-path="images/moengage_ec111b.png" />
   <img alt="test push 2.png" src="https://mintcdn.com/moengage-doc-2315-external-css-font-urls/KsJki5a8yMg6ntlX/images/moengage_6c92f4.png?fit=max&auto=format&n=KsJki5a8yMg6ntlX&q=85&s=48acfd95b55c831ad495510ad4dc22cb" width="640" height="1429" data-path="images/moengage_6c92f4.png" />