TLS 1.0 and 1.1 support ended on GitLab.com and API
Dec 17, 2018Melissa Farber

Summary
This post announces the discontinuation of TLS 1.0 and 1.1 support on GitLab.com and its API, mandating TLS 1.2 for all client connections. It details specific client incompatibilities with TLS 1.2, including Git-Credential-Manager-for-Windows prior to 1.14.0, Git on older Red Hat versions, JGit/Java releases < JDK 8, and older Visual Studio versions, providing upgrade paths for each. It also notes that self-managed installations will track these changes in a separate issue for a future release.