Terraform - Error: Insufficient features blocks

Problem

Plan/apply runs failing with the error above.

Error

Error: Insufficient features blocks

Cause

• Below are 2 scenarios when the error can be seen:

Scenario 1:
features {} is missing in the provider block

provider "azurerm" {
subscription_id = "XXX"
tenant_id = "XXX"
}

Correct syntax with features {} included :

provider "azurerm" {
features {}
subscription_id = "XXX"
tenant_id = "XXX"
}

Scenario 2:
There is also another possibility to hit the same error with having the features block included in all provider blocks. It can happen if:

1. Using only provider aliases without a default provider.
2. There is resource that do not reference alias provider.

Failing configuration

provider "azurerm" {
alias = "test1"
features {}
subscription_id = "XXX"
tenant_id = "XXX"
}

provider "azurerm" {
alias = "test2"
features {}
subscription_id = "XXX"
tenant_id = "XXX"
}

resource "azurerm_resource_group" "example" {
name = "example-cdn-frontdoor"
location = "West Europe"
}

Solutions

• Solution 1

Create a default provider:

provider "azurerm" {
features {}
subscription_id = "XXX"
tenant_id = "XXX"
}

• Solution 2

All resources in the configuration should have the provider argument referencing an alias provider from example above:

resource "azurerm_resource_group" "example" {
provider = azurerm.test1 
name = "example-cdn-frontdoor"
location = "West Europe"
}

Outcome

Terraform runs should not fail with Error: Insufficient features blocks. 

Additional Information

• Provider configuration
• If issue persists please reach out Hashicorp support team