Terraform CLI
Terraform CLI version does not satisfy the configuration constraint
Error: Unsupported Terraform Core version
Terraform refused to initialize because the current CLI version does not match the configuration's required_version constraint.
Observed message
Error: Unsupported Terraform Core version
Why it happens
- The installed Terraform CLI version is newer or older than the configuration allows.
- The required_version constraint is pinned too narrowly for the team's current CLI version.
- A project was upgraded on one machine while another environment still uses a different Terraform version.
How to fix it
- Check the required_version constraint in the terraform block and compare it with terraform version output.
- Install a Terraform CLI version that satisfies the declared constraint.
- Only broaden the version constraint if the configuration is actually compatible with the newer version.
