We will remove support for TLS 1.0 and 1.1 connections to all applications on cloud.gov on March 30, so that all connections must use TLS 1.2. TLS 1.0 and 1.1 are outdated versions of the encryption protocol for HTTPS connections, and federal standards require federal systems to stop using them (see FedRAMP TLS Requirements). After this change, your applications will be inaccessible for anyone using a client device that requires TLS 1.1 or lower. We estimate this change will block less than 1 percent of traffic that reaches applications hosted on cloud.gov today. It’s probably required for your applications by your own agency as well, but if you have any concerns or questions, please contact us.