GCP 400 Bad Request by Ulysses · Mar 15, 2021 After logging in, I tried to run Terraform in GCP and received this error: oauth2: cannot fetch token: 400 Bad Requestoauth2: cannot fetch token: 400 Bad Request Here’s the fix. Login using application-default. gcloud auth application-default logingcloud auth application-default login You can then Terraform. terraform applyterraform apply