# 20012: Invalid TLSv1.2 Cipher Suite

Log Type: APPLICATION

Log Level: ERROR

## Description

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