Microsoft started removing access within O365 and Exchange Online for connectivity using TLS versions 1.0 and 1.1 on 15 October 2020. To avoid any service impact, we strongly advise that you start transitioning to TLS 1.2 as soon as possible.įor more information/guidance related to this retirement, please refer to:Įnable TLS 1.2 support as Azure AD TLS 1.0/1.1 is deprecated – Active Directory | Microsoft Docs Microsoft Deprecation of TLS 1.0 and 1.1 in O365 and Exchange Online Use TLS 1.2 and modern cipher suites on client/server applications/OS, communicating with Azure Active Directory, for Azure workloads or Microsoft 365 services. Windows 8.1 and later supports TLS 1.2, and it is enabled by default.Windows 7 supports TLS 1.2, but it is disabled by default.Windows Vista does not work with or support TLS 1.2.If you have clients or use applications that communicate with or authenticate against Azure Active Directory and Active Directory Federated Services (ADFS), then those applications might not work as expected or at all if they cannot use TLS 1.2 to communicate. How might this change affect your organisation? ![]() If your organisation runs its own Azure Active Directory and Active Directory Federated Services (ADFS) instance you will need to review your sign in logs to identify any users still logging in with TLS 1.0 and 1.1 and remediate by 31 January 2022 when Microsoft will start making the changes to all other tenants. Other Instances of Azure Active Directory These organisations with accounts still using these versions will be contacted by their regional security representative and Product Implementation & Relationship Manager as well as the NHSmail service team to provide additional information to assist in organisations identifying impacted areas with their local infrastructure.įor NHSmail Active Directory Federated Services (ADFS) TLS 1.0 and TLS 1.1 it will be disabled from 30 September 2022. The NHSmail team has been working with Microsoft to identify nhs.net accounts that are using clients or applications that are still using TLS 1.0 or TLS 1.1. The NHSmail Active Directory Federated Services (ADFS) is used to authenticate to NHSmail when logging on and used by many applications for single sign on. NHSmail Active Directory Federated Services (ADFS) Microsoft are planning to deprecate their support for TLS 1.0 and TLS 1.1 in Azure AD (AAD) and Active Director Federated Services (ADFS) on the 31 st January 2022 which is being applied globally. ![]() Versions 1.0 and 1.1 are no longer compliant with latest security requirements and are being retired by most vendors in favour of version 1.2 and 1.3. Transport Layer Security (TLS) is a way of encrypting data in transit and was first released in the 1990s. Microsoft Deprecation of TLS 1.0 and 1.1 in Azure Active Directory
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