New-IISSite with Sslflag DisableLegacyTLS property value: New-IISSite $siteName '$env:systemdrive\inetpub\https $certificate.Thumbprint $DisableLegacyTLS $storeLocation -passthruĪn example of adding a site binding to an existing site and disabling $storeLocation = 'Cert:\LocalMachine\My'Īn example of creating a site binding to a new site and disabling legacy It’s convenient to create shorter named variables for them: $Sni = ::Sni In PowerShell you can reference SSL flags like this: ::DisableLegacyTLS Option #2: PowerShell (Available in Windows 10 version 2004 and Windows Server version 2004 and newer) Shown below, then check “Disable Legacy TLS” and click OK.

Option #1: IIS UI configuration (Available in Windows 10 version 2004 and Windows Server version 2004 and newer)Ĭreate a site binding for the SSL Certificate “” as Information Services (IIS) Server UI, via PowerShell commands or C++ The Disable Legacy TLS feature can be deployed through the Internet We have made thisįunctionality available higher up the stack, where the TLS session isīound to the certificate, so a specific minimum TLS version can beįigure 2: Disable Legacy TLS feature enforcing minimum TLS version for a Protocols via system-wide registry settings. Requests with a minimum protocol version requires disabling weaker The traffic and provide for TLS version enforcement, as servicing TLS Traditionally, you'd need two physically separate hosts to handle all This allows customers to finish readiness testing for TLS 1.2 without service disruption and without blocking other customers who are ready for TLS 1.2. directs customers with legacy TLS 1.0 needs (like those still migrating to TLS 1.2) to an endpoint which supports TLS 1.0 for a limited time. directs your customers to a service endpoint supporting only TLS 1.2 and above. This is the defaultįigure 1: Default TLS Version selection and Certificate Binding Figure 1 illustrates TLS version selection and certificateīinding as distinctly separate actions. Feature scenario detailsĪ common deployment scenario features one set of hardware in aĭatacenter with customers of mixed needs: some need TLS 1.2 as anĮnforced minimum right now and others aren’t done removing TLS 1.0ĭependencies. Prior to this change, deploying such capabilities would require an additional hardware investment because such settings were only configurable system-wide via registry.

TheĬhanges are implemented in HTTP.sys, and with the issuance of additional certificates, allow traffic to be routed to the new endpoint with the appropriate TLS version. Groupings of endpoints on the same hardware: one that allows only TLSġ.2+ traffic, and another which accommodates legacy TLS 1.0 traffic. 'Disable Legacy TLS' and it effectively enforces a TLS version andĬipher suite floor on any certificate you select.ĭisable Legacy TLS also allows an online service to offer two distinct Used with individual certificates you designate. Windows Server 2019 now allows you to block weak TLS versions from being To make your transition to a TLS 1.2+ world easier. Now Microsoft is pleased to announce a powerful new feature in Windows Helped customers address these issues by adding TLS 1.2 support toīy shipping new logging formats in IIS for detecting weak TLSīy clients, and providing the latest technical guidance for Needs with the migration readiness of their customers. They run into the complex challenge of balancing their own security Ivan Pashov, Principal Software Engineering Lead, Core NetworkingĪs engineers worldwide work to eliminate their own dependencies on TLS Michael Brown, Senior Software Engineer, Internet Information Services Niranjan Inamdar, Senior Software Engineer, Core Networking Gabriel Montenegro, Principal Program Manager, Core Networking Andrew Marshall, Principal Security Program Manager, Customer Security

Disable old tls versions