# Error: Failed to query available provider packages: could not retrieve the list of available versions for provider hashicorp/aws: the registry at registry.terraform.io did not respond

- **ID:** `terraform/invalid-provider-registry-source`
- **Domain:** terraform
- **Category:** network_error
- **Verification:** ai_generated
- **Fix Rate:** 85%

## Root Cause

Terraform cannot reach the Terraform Registry (registry.terraform.io) to fetch provider metadata, often due to network issues, DNS failures, or proxy misconfiguration.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| Terraform 1.4 | active | — | — |
| Terraform 1.5 | active | — | — |
| Terraform 1.6 | active | — | — |
| Terraform 1.7 | active | — | — |

## Workarounds

1. **Check network connectivity: curl -v https://registry.terraform.io/.well-known/terraform.json** (90% success)
   ```
   Check network connectivity: curl -v https://registry.terraform.io/.well-known/terraform.json
   ```
2. **Use a local provider mirror or filesystem mirror: terraform init -plugin-dir=/path/to/mirror** (95% success)
   ```
   Use a local provider mirror or filesystem mirror: terraform init -plugin-dir=/path/to/mirror
   ```
3. **Set TF_REGISTRY_DISCOVERY_RETRY=3 to increase retry attempts: export TF_REGISTRY_DISCOVERY_RETRY=3 && terraform init** (75% success)
   ```
   Set TF_REGISTRY_DISCOVERY_RETRY=3 to increase retry attempts: export TF_REGISTRY_DISCOVERY_RETRY=3 && terraform init
   ```

## Dead Ends

- **** — Using a non-existent or misconfigured proxy worsens connectivity. (80% fail)
- **** — This is an extreme measure that compromises security and may not solve DNS issues. (40% fail)