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if have that flutter android project run on android device. and the i am login Google Sign-In using the Google cloud Api using "flutter run --release" on app testing the App that time proper Google Sign run login but if i have the that same code publish on the Play store that time download the app that time the not login "Exception : PlatformException(Sign_in_failed, o1,d:10: , null , null)". give me that error on that time give me Solution

When I run my Flutter Android project in release mode using flutter run --release and test it on a device, Google Sign-In with the Google Cloud API works perfectly. However, after publishing the same build to the Play Store and downloading it, the login fails. Instead of signing in, it throws the following error: PlatformException(Sign_in_failed, o1, d:10:, null, null).

I need a solution for this issue.

asked Sep 25, 2025 at 8:52
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  • I had the same issue once, and it was just a mismatched SHA. Did you add the Google Play signing SHA to the Google Cloud API? Your local SHA works because it’s registered, but you also need to register the Play Store bundle signing key. Commented Sep 25, 2025 at 13:27
  • how to Register Play store bundle Signing key Commented Sep 26, 2025 at 5:08
  • You also need to add the Google Play App Signing SHA-1 key in the Firebase/Google Cloud console (where you already added your local debug/release SHA). Go to Project Settings → General → Your Apps → Add Fingerprint and paste the Play Signing SHA from the Play Console (Release > Setup > App Integrity). Commented Sep 26, 2025 at 6:47
  • I have that process already Done but same issue show me\ Commented Sep 26, 2025 at 6:54

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