When Disable Legacy TLS is set, the following restrictions are enforced: Disable SSL2, SSL3, TLS1.0 and TLS1.1 protocols. new endpoint with the appropriate TLS version. A common deployment scenario features one set of hardware in adatacenter with customers of mixed needs: some need TLS 1.2 as anenforced minimum right now and others aren’t done removing TLS 1.0dependencies. We call this feature Figure 1 illustrates TLS version selection and certificatebinding as distinctly separate actions. Or, change the DWORD data to 0x0. To do this, add 2 Registry Keys to the SCHANNEL Section of the registry. For added protection, back up the registry before you modify it. Insight: These rules are applied for the evaluation of the cryptographic strength: - Any SSL/TLS using no cipher is considered weak. To enable the system to use the protocols that will not be negotiated by default (such as TLS 1.1 and TLS 1.2), change the DWORD value data of the DisabledByDefault value to 0x0 in the following registry keys under the Protocols key: The DisabledByDefault value in the registry keys under the Protocols key does not take precedence over the grbitEnabledProtocols value that is defined in the SCHANNEL_CRED structure that contains the data for an Schannel credential. Otherwise, change the DWORD data to 0x0. Testing protocols (via sockets except TLS 1.2, SPDY+HTTP2) HTTP.sys: HTTP_SERVICE_CONFIG_SSL_PARAM.DefaultFlags On the right hand side, double click on SSL Cipher Suite Order. dependencies. The Disable Legacy TLS feature can be deployed through the Internet enforced minimum right now and others aren’t done removing TLS 1.0 Specifically, they are as follows: To use only FIPS 140-1 cipher suites as defined here and supported by Windows NT 4.0 Service Pack 6 Microsoft TLS/SSL Security Provider with the Base Cryptographic Provider or the Enhanced Cryptographic Provider, configure the DWORD value data of the Enabled value in the following registry keys to 0x0: And configure the DWORD value data of the Enabled value in the following registry keys to 0xffffffff: The procedures for using the FIPS 140-1 cipher suites in SSL 3.0 differ from the procedures for using the FIPS 140-1 cipher suites in TLS 1.0. If you do not configure the Enabled value, the default is enabled. IIS Crypto is a free tool that gives administrators the ability to enable or disable protocols, ciphers, hashes and key exchange algorithms on Windows Server 2008, 2012, 2016 and 2019. by clients, as well as providing the latest technical guidance for Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, see How to back up and restore the registry in Windows. eliminating TLS 1.0 5. endpoint and will also restrict cipher suites that can be used How can I best communicate the recommended usage of these We call this feature “Disable Legacy TLS” and it effectively enforces a TLS version and cipher … 1.2+ traffic, and another which accommodates legacy TLS 1.0 traffic. To allow RSA, change the DWORD value data of the Enabled value to the default value 0xffffffff. In a computer that is running Windows NT 4.0 Service Pack 6 that includes the non-exportable Rasenh.dll and Schannel.dll files, run Non-export.reg to make sure that only TLS 1.0 FIPS cipher suites are used by the computer. For example, disable insecure ciphers and enable more recent ones. In this manner, any server or client that is talking to a client or server that must use RC4 can prevent a connection from occurring. endpoint supporting only TLS 1.2 and above. Figure 2: Disable Legacy TLS feature enforcing minimum TLS version for a Ciphers subkey: SCHANNEL\KeyExchangeAlgorithms\PKCS. customers – those with an obligation to use TLS 1.2+, and those still However, serious problems might occur if you modify the registry incorrectly. This registry key means no encryption. Apparently, the issue was the server OS: Microsoft changed the name of the ciphers between windows server 2012 and 2016 (See this page for all the keys per OS version). supports TLS 1.0 for a limited time. needs (like those still migrating to TLS 1.2) to an endpoint which groupings of endpoints on the same hardware: one which allows only TLS The following cryptographic service providers (CSPs) that are included with Windows NT 4.0 Service Pack 6 were awarded the certificates for FIPS-140-1 crypto validation. The Transport Layer Security (TLS) and Secure Sockets Layer (SSL) are protocols that provide for secure communications. Ciphers subkey: SCHANNEL\Ciphers\RC4 56/128. usage, technical guidance for For registry keys that apply to Windows Server 2008 and later versions of Windows, see the TLS Registry Settings. Active Directory Federation Services uses these protocols for communications. This registry key does not apply to the export version. This registry key refers to the RSA as the key exchange and authentication algorithms. The GCM is used). Ciphers subkey: SCHANNEL\Ciphers\RC2 128/128. The following are valid registry keys under the Ciphers key. Otherwise, change the DWORD value data to 0x0. I wnat to disbale TLS 1.0 and weak ciphers like RC4, DES and 3DES.I want to make sure i will be able to RDP to Windows 2016 server after i disable them? In this article, we refer to them as FIPS 140-1 cipher suites. selected certificate, Secure.contoso.com. Therefore, make sure that you follow these steps carefully. It does not apply to the export version (but is used in Microsoft Money). The Ciphers registry key under the SCHANNEL key is used to control the use of symmetric algorithms such as DES and RC4. Thanks for that bit of information. assigned as described in Figure 2 below. adding TLS 1.2 support to The default Enabled value data is 0xffffffff. Quoting what another source told me: At least latest windows version of Chrome works with this: chrome --cipher-suite-blacklist=0x009c,0x009d,0x002f,0x0035,0x000a. On the left hand side, expand Computer Configuration, Administrative Templates, Network, and then click on SSL Configuration Settings. Enable/Disable extended event logging for a particular SSL Otherwise, change the DWORD value data to 0x0. Cipher Suites 1 and 2 are not supported in IIS 4.0 and 5.0. 1.0, This information also applies to independent software vendor (ISV) applications that are written for the Microsoft Cryptographic API (CAPI). and Trust, Gabriel Montenegro, Principal Program Manager, Core Networking, Niranjan Inamdar, Senior Software Engineer, Core Networking, Michael Brown, Senior Software Engineer, Internet Information Services, Ivan Pashov, Principal Software Engineering Lead, Core Networking. 4. C++ is with the HTTP_SERVICE_CONFIG_SSL_FLAG_DISABLE_LEGACY_TLS As registry file or from command line Michael legacy TLS: Additionally, one can troubleshoot and test this feature with Netsh: netsh http add sslcert You can use the Windows registry to control the use of specific SSL 3.0 or TLS 1.0 cipher suites with respect to the cryptographic algorithms that are supported by the Base Cryptographic Provider or the Enhanced Cryptographic Provider. 1.3.2.5 Disable weak cipher suites (NULL cipher suites, DES cipher suites, RC4 cipher suites, Triple DES, etc) 1.3.2.6 Ensure TLS cipher suites are correctly ordered. to HTTP2 cipher suites. This registry key does not apply to an exportable server that does not have an SGC certificate. Any removal of ciphers in the future would likely result in a sticky post created in MSDN or an annoucement made. forthcoming. First we will disable TLS 1.0 on Windows Server 2019 through the registry editor in the following location: HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\ I will … For registry keys that apply to Windows Server 2008 and later versions of Windows, see the TLS Registry Settings. That makes all the TLS_RSA_* ciphers go away. Microsoft has supported this protocol since Windows XP/Server 2003. functionality: Figure 1: Default TLS Version selection and Certificate Binding Disable ALL of the unwanted ciphers by changing the DWORD value data of the Enabled value to 0x0. Summary The following cryptographic service providers (CSPs) that are included with Windows NT 4.0 Service Pack 6 were awarded the certificates for … working on the migration away from TLS 1.0, all without additional used with individual certificates you designate. Hi, a measure to protect your Windows System against Sweet32 attacks is to disable the DES and Triple DES. To allow this cipher algorithm, change the DWORD value data of the Enabled value to 0xffffffff. older operating to make your transition to a TLS 1.2+ world easier. www.contoso.com certification use Disable disablelegacytls=enable, netsh http show sslcert , Watch for Disable Legacy TLS Versions  : Set/Not Set. Any changes to the contents of the CIPHERS key or the HASHES key take effect immediately, without a system restart. If these registry keys are not present, the Schannel.dll rebuilds the keys when you restart the computer. Disabling this algorithm effectively disallows the following value: Ciphers subkey: SCHANNEL\Ciphers\RC2 56/128, Ciphers subkey: SCHANNEL\Ciphers\RC2 56/56. will look to make Disable Legacy TLS available across its online TLS: New-IISSite with Sslflag DisableLegacyTLS property value: An example of adding a site binding to an existing site and disabling readiness testing for TLS 1.2 without service disruption and without The KeyExchangeAlgorithms registry key under the SCHANNEL key is used to control the use of key exchange algorithms such as RSA. issuance of additional certificates, allow traffic to be routed to the services based on customer demand. Disable Legacy TLS also allows an online service to offer two distinct Official documentation of these changes on docs.Microsoft.com is by shipping new logging formats in IIS for detecting weak TLS Weak SSL ciphers should already be disabled on Windows Server 2008 by default but you still have to disable SSL v2.0. older operating To allow this hashing algorithm, change the DWORD value data of the Enabled value to the default value 0xffffffff. registry. the traffic and provide for TLS version enforcement, as servicing TLS Note: Plesk doesn not provide build-in functionality to manage SSL/TLS ciphers on Windows server. binding as distinctly separate actions. To disable TLS 1.1 for both Server (inbound) and Client (outbound) connections on an Exchange Server please perform the following: 1. https://secure.contoso.com directs your customers to a service dependencies. Enable/Disable TLS1.2 for a particular SSL endpoint. Disable encryption ciphers DES, 3DES, and RC4 (so only AES is used). This includes Microsoft. Otherwise, change the DWORD value data to 0x0. shown below, then check “Disable Legacy TLS” and click OK. For the Schannel.dll file to recognize any changes under the SCHANNEL registry key, you must restart the computer. 4. What I don't understand is why my servers don't have all the default cipher suites available after OSD. Disabling this algorithm effectively disallows the following values: Ciphers subkey: SCHANNEL\Ciphers\Triple DES 168. 1.4.1 IIS recently (Windows Server 1709+) added turnkey support for HSTS. They are Export.reg and Non-export.reg. Restart the machine for the changes to take effect. CBC ciphers are not AEAD ciphers, but GCM are. I'm using this list for reference. If you do not configure the Enabled value, the default is enabled. (Windows Server 2019 is based on the 1809 version) – Tuttu Aug 17 '20 at 12:47 Disable encryption cipher AES with CBC chaining mode (so only AES Create a site binding for the SSL Certificate “secure.contoso.com” as In SSL 3.0, the following is the definition master_secret computation: In TLS 1.0, the following is the definition master_secret computation: Selecting the option to use only FIPS 140-1 cipher suites in TLS 1.0: Because of this difference, customers may want to prohibit the use of SSL 3.0 even though the allowed set of cipher suites is limited to only the subset of FIPS 140-1 cipher suites. Start Registry Editor (Regedt32.exe), and then locate the following registry key: HTTP_SERVICE_CONFIG_SSL_FLAG_DISABLE_TLS12 : RC2 RC4 MD5 3DES DES NULL All cipher suites marked as EXPORT. eliminating TLS 1.0 Microsoft Exchange 2010/2013: Do not use script versions later than v2.x. Functionality. This article describes how to restrict the use of certain cryptographic algorithms and protocols in the Schannel.dll file. The Hashes registry key under the SCHANNEL key is used to control the use of hashing algorithms such as SHA-1 and MD5. It does not apply to the export version. Original KB number:   245030. Along with Disable Legacy TLS, the following additions have been made to needs with the migration readiness of their customers. Ciphers subkey: SCHANNEL/KeyExchangeAlgorithms. certificate and bind it to an endpoint allowing TLS 1.0. This registry key refers to 168-bit Triple DES as specified in ANSI X9.52 and Draft FIPS 46-3. Only 5445 and 8443 are flagged as presenting weak ciphers (even after the registry has been hacked to bits to prevent weak ciphers from being presented) So I built a Linux box to run testssl.sh and ran individual scans against each port: ##### RESULTS for Port 8443. This registry key refers to 56-bit DES as specified in FIPS 46-2. We found with SSL Labs documentation & from 3rd parties asking to disable below weak Ciphers. datacenter with customers of mixed needs: some need TLS 1.2 as an If so, I may need to provide a legacy.contoso.com It also requires you to plan out the naming of the certificates issued The simplest way to enable/disable this functionality per certificate in This text will be in one long string. bound to the certificate, so a specific minimum TLS version can be If you do not configure the Enabled value, the default is enabled. Microsoft TLS/SSL Security Provider, the Schannel.dll file, uses the CSPs that are listed here to conduct secure communications over SSL or TLS in its support for Internet Explorer and Internet Information Services (IIS). HTTP_SERVICE_CONFIG_SSL_FLAG_DISABLE_HTTP2: Enable/Disable Disabling RSA effectively disallows all RSA-based SSL and TLS cipher suites supported by the Windows NT4 SP6 Microsoft TLS/SSL Security Provider. The short version is that with the current state of TLS 1.2, lack of TLS 1.3 [in Windows 2016, Windows 2012R2 or Windows 2008R2] and fewer ways of doing the ciphers, we have struck a position that is a compromise and best-we-can-do-with-what-we've-got-to-work-with in Windows Server 2016 (and less). As engineers worldwide work to eliminate their own dependencies on TLS XP, 2003), you will need to set the following registry key: 5. If you ever wished to create statistics about encryption protocol versions and ciphers your clients are using, see New IIS functionality to help identify weak TLS usage how this can be logged in Windows Server 2016 and Windows Server 2012 R2 IIS logs. deploying such capabilities would require an additional hardware Setting this flag will disable TLS1.0/1.1 for that - All SSLv2 ciphers are considered weak due to a design flaw within the SSLv2 protocol. “Disable Legacy TLS” and it effectively enforces a TLS version and Double click the TLS10-Disable.reg file. systems, By default, it is turned off. Use Windows utilities or 3rd-party applications instead. In Windows NT 4.0 Service Pack 6, the Schannel.dll file does not use the Microsoft Base DSS Cryptographic Provider (Dssbase.dll) or the Microsoft DS/Diffie-Hellman Enhanced Cryptographic Provider (Dssenh.dll). TLS_RSA_* are not forward secrecy ciphers, bug TLS_ECDHA_* are. While no longer the default security protocol in use by modern OSes, TLS 1.0 is still supported for backwards compatibility. In that case, change the DWORD value data of the Enabled value to 0x0 in the following registry keys under the Protocols key: The Enabled value data in these registry keys under the Protocols key takes precedence over the grbitEnabledProtocols value that is defined in the SCHANNEL_CRED structure that contains the data for a Schannel credential. The SSL Cipher Suites field will populate in short order. Additional events are logged to Windows Event Log. The following are valid registry keys under the Hashes key. A common deployment scenario features one set of hardware in a Abstract: Per default some weak ciphers & protocols for SSL communications are enabled on an Windows 2012 R2 OS which is used for an Microsoft SharePoint (2013/2016) environment. There is only one event supported as of now which is logged when blocking other customers who are ready for TLS 1.2. To get both of the world you need to use TLS_ECDHA_*_GCM ciphers (or/and other AEAD ciphers) and make sure there are ordered in the way they have precedence over other less-secure ciphers (ssltest displays if server preferred ordered should be respected by the … To disable 3DES on your Windows server, set the following registry key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Ciphers\Triple DES 168] "Enabled"=dword:00000000 If your Windows version is anterior to Windows Vista (i.e. To return the registry settings to default, delete the SCHANNEL registry key and everything under it. Disable Legacy TLS provides powerful new capabilities for enforcing TLS How to back up and restore the registry in Windows, Microsoft Base Cryptographic Provider (Rsabase.dll), Microsoft Enhanced Cryptographic Provider (Rsaenh.dll) (non-export version). Now Microsoft is pleased to announce a powerful new feature in Windows to make your transition to a TLS 1.2+ world easier. You may want to use only those SSL 3.0 or TLS 1.0 cipher suites that correspond to FIPS 46-3 or FIPS 46-2 and FIPS 180-1 algorithms provided by the Microsoft Base or Enhanced Cryptographic Provider. functionality available higher up the stack, where the TLS session is If you would like to see what Cipher Suites your server is currently offering, copy the text from the SSL Cipher Suites field and paste it into a text document. This is a common request when a vulnerability scan detects a vulnerability. changes are implemented in HTTP.sys, and in conjunction with the Prior to this change, You can change the Schannel.dll file to support Cipher Suite 1 and 2. Its implementation in the Rsabase.dll and Rsaenh.dll files is validated under the FIPS 140-1 Cryptographic Module Validation Program. 6. 1.5 CORS support flag provided by the HttpSetServiceConfiguration HTTP.sys API. The Windows NT 4.0 Service Pack 6 Microsoft TLS/SSL Security Provider supports the following SSL 3.0-defined CipherSuite when you use the Base Cryptographic Provider or the Enhanced Cryptographic Provider: Neither SSL_RSA_EXPORT1024_WITH_DES_CBC_SHA nor SSL_RSA_EXPORT1024_WITH_RC4_56_SHA is defined in SSL 3.0 text. access point for users who need TLS 1.0? cipher suite floor on any certificate you select. Traditionally, you’d need two physically separate hosts to handle all Or, change the DWORD value data to 0x0. usage protocols via system-wide registry settings. endpoint. HTTP_SERVICE_CONFIG_SSL_FLAG_DISABLE_LEGACY_TLS: Google has since disabled QUIC on youtube, but just to be safe, don't forget to disable QUIC under about:flags. For the versions of Windows that releases before Windows Vista, the key should be Triple DES 168/168. In addition to today’s availability of This article informs how to explicitly allow SSH V2 only if your networking devices support that and have been configured the same and additionally on how to disable insecure ciphers when using the Solarwinds SFTP\SCP server (Free Tool) that also comes out of the box with the NCM product. In PowerShell you can reference SSL flags like this: It’s convenient to create shorter named variables for them: An example of creating a site binding to a new site and disabling legacy investment because such settings were only configurable system-wide via Enable/Disable Session Ticket for a particular SSL endpoint. the SSL handshake fails. The Security Support Provid… today, and provide a different certificate as a backup “legacy” dependencies. This registry key refers to Secure Hash Algorithm (SHA-1), as specified in FIPS 180-1. To date we have endpoint. You should ensure you have a full working backup of your server’s system state (which includes the registry) before making any of the following changes. Should my default, already-in-use funamentally unsafe). Two examples of registry file content for configuration are provided in this section of the article. Ciphers subkey: SCHANNEL\Ciphers\RC4 64/128. To allow this cipher algorithm, change the DWORD value data of the Enabled value to 0xffffffff. However, the program must also support Cipher Suite 1 and 2. Disable ECDH key exchanges with key size less than 224. HTTP_SERVICE_CONFIG_SSL_FLAG_LOG_EXTENDED_EVENTS : By default, the “Not Configured” button is selected. As of now with all DCs we have disabled RC4 128/128, RC4 40/128, RC4 56/128, RC4 64/128, Triple DES 168 through registry value Enabled 0. This allows customers to finish certificates to my customers? Disable MD5 by setting the Enabled value to 0x0 in SCHANNEL\Hashes\MD5 Subkey. 1.4 HSTS support. hardware expenditure. To disable SSL v2.0 (necessary for Windows Server 2003 and 2008): 1. The following are valid registry keys under the KeyExchangeAlgorithms key. Click Yes to update your Windows Registry with these changes. Windows Server 2019 now allows you to block weak TLS versions from being This is the defaultfunctionality: Figure 1: Default TLS Version selection and Certificate BindingFunctionality 1. https://secure.contoso.comdirects your custom… Please note that we are constantly making changes and enhancements. # - We get penalty for not using AEAD suites with RSA certificates. This article contains the necessary information to configure the TLS/SSL Security Provider for Windows NT 4.0 Service Pack 6 and later versions. Enable SHA by setting the Enabled value to 0xffffffff in SCHANNEL\Hashes\SHA Subkey. that it does not support the listed weak ciphers anymore. requests with a minimum protocol version requires disabling weaker The two above workarounds are suggested if you have concerns. Clients and servers that do not want to use RC4 regardless of the other party’s supported ciphers can disable RC4 cipher suites completely by setting the following registry keys. You can leverage this feature to meet the needs of large groups of Evolving regulatory requirements as well as new security vulnerabilities in TLS 1.0 provide corporations with the incentive to disable TLS 1.0 entirely. Beginning with KB4490481, Windows Server 2019 now allows you to block weak TLS versions from being used with individual certificates you designate. Both SSL 3.0 and TLS 1.0 (RFC2246) with INTERNET-DRAFT 56-bit Export Cipher Suites For TLS draft-ietf-tls-56-bit-ciphersuites-00.txt provide options to use different cipher suites. now supports the following new values: HTTP_SERVICE_CONFIG_SSL_FLAG_ENABLE_SESSION_TICKET: Disable DH key exchange with key size less than 2048. When you use RSA as both key exchange and authentication algorithms, the term RSA appears only one time in the corresponding cipher suite definitions. To allow this cipher algorithm, change the DWORD value data of the Enabled value to 0xffffffff. HTTP/2 for a particular SSL endpoint. Enable/Disable legacy TLS versions for a particular SSL Windows NT 4.0 Service Pack 6 Microsoft TLS/SSL Security Provider also supports the following TLS 1.0-defined CipherSuite when you use the Base Cryptographic Provider or Enhanced Cryptographic Provider: A cipher suite that is defined by using the first byte 0x00 is non-private and is used for open interoperable communications. helped customers address these issues by adding TLS 1.2 support to Logging API was deployed to servers with OS 2012, and the template was created using 2016 cipher … Figure 1 illustrates TLS version selection and certificate NOTE: If you do not configure the Enabled value, the default is enabled. This article applies to Windows Server 2003 and earlier versions of Windows. # - RSA certificates need below ciphers, but ECDSA certificates (EV) may not. However, several SSL 3.0 vendors support them. with this functionality enabled. Click on the “Enabled” button to edit your server’s Cipher Suites. disablelegacytls=enable, netsh http update sslcert HTTP.sys APIs. Andrew Marshall, Principal Security Program Manager, Customer Security This is the default Create the SCHANNEL Ciphers subkey in the format: SCHANNEL\(VALUE)\(VALUE/VALUE), Ciphers subkey: SCHANNEL\Ciphers\RC4 128/128. Update: The current stance is that these are weak but not broken (i.e. To turn off encryption (disallow all cipher algorithms), change the DWORD value data of the Enabled value to 0xffffffff. Restart the computer value to 0xffffffff used with individual certificates you designate result... 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Certificate, Secure.contoso.com a measure to protect your Windows System against Sweet32 attacks is to disable below weak ciphers.! Supported for backwards compatibility of Chrome works with this: Chrome -- cipher-suite-blacklist=0x009c,0x009d,0x002f,0x0035,0x000a Triple! Registry before you modify it under it sticky post created in MSDN or an made... The two above workarounds are suggested if you do not configure the Enabled value, the default is Enabled handshake. Aead suites with RSA certificates need below ciphers, but GCM are note that we are constantly making and! Authentication algorithms SCHANNEL\Hashes\MD5 subkey rc2 RC4 MD5 3DES DES NULL all cipher suites 1 and 2 these certificates my! Might occur if you have concerns ) and Secure Sockets Layer ( SSL ) are protocols that provide for communications... Implementation in the Schannel.dll file to recognize any changes to take effect “ Legacy... Back up and restore the registry, see the TLS registry Settings to default, the following registry key the... At least latest Windows version of Chrome works with this functionality per certificate in C++ is with incentive. Get penalty for not using AEAD suites with RSA certificates certificate/endpoint bindings be Triple DES also support cipher Suite on! Following value: ciphers subkey in the future would likely result in a sticky post created in MSDN or annoucement..., double click on SSL cipher suites releases before Windows Vista, the key disable weak ciphers windows server 2019 be DES. And certificate binding functionality, you can change the DWORD value data to 0x0 in this article applies independent! Enforced: disable SSL2, SSL3, TLS1.0 and TLS1.1 protocols, deploying such capabilities would an! Nt 4.0 service Pack 6 and later versions of Windows, see the TLS registry Settings without... Cipher AES with cbc chaining mode ( so only AES is used to control the use hashing. Nt 4.0 service Pack 6 and later versions of Windows, see disable weak ciphers windows server 2019 TLS registry Settings a selected certificate Secure.contoso.com! More information about how to manage SSL/TLS ciphers on Windows Server 2008 and versions! Is validated under the SCHANNEL key is used to HTTP2 cipher suites that can used... New capabilities for enforcing TLS version/cipher Suite floors on specific certificate/endpoint bindings Windows. Default Security protocol in use by modern OSes, TLS 1.0 is still supported for compatibility. Registry keys that apply to Windows Server changes and enhancements there is only event. Up the registry before you modify it: Enable/Disable TLS1.2 for a SSL... Keys to the contents of the Cryptographic strength: - any SSL/TLS using cipher. And without blocking other customers who are ready for TLS 1.2 and above understand is why my do! Plesk doesn not provide build-in functionality to manage SSL/TLS ciphers and protocols in the future likely. 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