---
page_type: error
code: 20012
message: "20012: Invalid TLSv1.2 Cipher Suite"
level: ERROR
---

## Description

## Error Code 20012

### Invalid TLSv1.2 Cipher Suite

The request was rejected because it was not correctly configured to use TLSv1.2. All new accounts are [required to use TLSv1.2 with supported ciphers suites](https://support.twilio.com/hc/en-us/articles/360007724794).

#### Possible Solutions:

- Reconfigure request to use a supported cipher suite for TLSv1.2
- Review these [tips for upgrading your environment to TLSv1.2](https://support.twilio.com/hc/en-us/articles/360006751753)

#### Supported Cipher Suites:

- TLS\_ECDHE\_RSA\_WITH\_AES\_128\_GCM\_SHA256 (ecdh\_x25519) - A
- TLS\_ECDHE\_RSA\_WITH\_AES\_128\_CBC\_SHA256 (ecdh\_x25519) - A
- TLS\_ECDHE\_RSA\_WITH\_AES\_128\_CBC\_SHA (ecdh\_x25519) - A
- TLS\_ECDHE\_RSA\_WITH\_AES\_256\_GCM\_SHA384 (ecdh\_x25519) - A
- TLS\_ECDHE\_RSA\_WITH\_AES\_256\_CBC\_SHA384 (ecdh\_x25519) - A
- TLS\_ECDHE\_RSA\_WITH\_AES\_256\_CBC\_SHA (ecdh\_x25519) - A
- TLS\_RSA\_WITH\_AES\_128\_GCM\_SHA256 (rsa 2048) - A
- TLS\_RSA\_WITH\_AES\_128\_CBC\_SHA256 (rsa 2048) - A
- TLS\_RSA\_WITH\_AES\_128\_CBC\_SHA (rsa 2048) - A
- TLS\_RSA\_WITH\_AES\_256\_GCM\_SHA384 (rsa 2048) - A
- TLS\_RSA\_WITH\_AES\_256\_CBC\_SHA256 (rsa 2048) - A
- TLS\_RSA\_WITH\_AES\_256\_CBC\_SHA (rsa 2048) - A
- TLS\_RSA\_WITH\_3DES\_EDE\_CBC\_SHA (rsa 2048) - C

### Possible Causes

Supported Cipher Suites list is not reflecting the reality.

### Possible Solutions

Changed with the real list which is checked