Firebase Functions 2nd Gen: The request was not authorized to invoke this service.

[madhavgharmalkar]

Hey! 👋🏾

I'm running into an issue using Swift, and 2nd Gen firebase functions (Node / Typescript). I've successfully tested my functions using the local emulator, and have successfully deployed them to firebase. However when I try to invoke the function, I run into the following error:

The request was not authorized to invoke this service. Read more at https://cloud.google.com/run/docs/securing/authenticating Additional troubleshooting documentation can be found at: https://cloud.google.com/run/docs/troubleshooting#401

After doing some searching on google, I found this StackOverflow issue which recommends adding the Cloud Functions Invoker permission to the service account. I tried that and it didn't work. Just to make sure, I added the Cloud Functions Invoker role to every account in my GCP IAM and I still haven't had any luck.

Any suggestions would be awesome!

[elishaJ]

@madhavgharmalkar 👋🏽 I came here trying to find a solution myself. I was getting the same error when deploying 2nd gen Cloud function (written in Python). I managed to resolve it by updating the IAM policy. I had to update the members from service account to allUsers (since I built a public API) and assigning the roles/run.invoker.

Verify the policy using:

`gcloud run services get-iam-policy projects//locations//services/
bindings:

• members:
  • allUsers
    role: roles/run.invoker`

Try assigning this role to the user/service account according to your function requirements. I hope that helps 🙌🏽