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windows/whats-new/deprecated-features.md
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@ -47,7 +47,7 @@ The features in this article are no longer being actively developed, and might b
| Feature | Details and mitigation | Deprecation announced |
|---|---|---|
| TLS server authentication certificates using RSA keys with key lengths shorter than 2048 bits | Support for certificates using RSA keys with key lengths shorter than 2048 bits will be deprecated. Internet standards and regulatory bodies disallowed the use of 1024-bit keys in 2013 ([Transitioning of Cryptographic Algorithms and Key Sizes - Discussion Paper (nist.gov)](https://csrc.nist.gov/CSRC/media/Projects/Key-Management/documents/transitions/Transitioning_CryptoAlgos_070209.pdf)), recommending specifically that RSA keys should have a key length of 2048 bits or longer. This deprecation focuses on ensuring that all RSA certificates used for TLS server authentication must have key lengths greater than or equal to 2048 bits to be considered valid by Windows. </br></br> TLS certificates issued by enterprise or test certification authorities (CA) aren't impacted with this change. However, we recommend that they be updated to RSA keys greater than or equal to 2048 bits as a security best practice. This change is necessary to preserve security of Windows customers using certificates for authentication and cryptographic purposes.| January 2024|
| TLS server authentication certificates using RSA keys with key lengths shorter than 2048 bits <!--8644149-->| Support for certificates using RSA keys with key lengths shorter than 2048 bits will be deprecated. Internet standards and regulatory bodies disallowed the use of 1024-bit keys in 2013 ([Transitioning of Cryptographic Algorithms and Key Sizes - Discussion Paper (nist.gov)](https://csrc.nist.gov/CSRC/media/Projects/Key-Management/documents/transitions/Transitioning_CryptoAlgos_070209.pdf)), recommending specifically that RSA keys should have a key length of 2048 bits or longer. This deprecation focuses on ensuring that all RSA certificates used for TLS server authentication must have key lengths greater than or equal to 2048 bits to be considered valid by Windows. </br></br> TLS certificates issued by enterprise or test certification authorities (CA) aren't impacted with this change. However, we recommend that they be updated to RSA keys greater than or equal to 2048 bits as a security best practice. This change is necessary to preserve security of Windows customers using certificates for authentication and cryptographic purposes.| January 2024|
| Windows Mixed Reality <!--8412877--> | [Windows Mixed Reality](/windows/mixed-reality/enthusiast-guide/before-you-start) is deprecated and will be removed in a future release of Windows. This deprecation includes the [Mixed Reality Portal](/windows/mixed-reality/enthusiast-guide/install-windows-mixed-reality) app, and [Windows Mixed Reality for SteamVR](/windows/mixed-reality/enthusiast-guide/using-steamvr-with-windows-mixed-reality) and Steam VR Beta. </br></br> As of November 1, 2026, for consumer editions of Windows and November 1, 2027 for commercial editions of Windows, Windows Mixed Reality will no longer be available for download via the Mixed Reality Portal app, Windows Mixed Reality for SteamVR, and Steam VR beta, and we'll discontinue support. At that time, Windows Mixed Reality will no longer receive security updates, nonsecurity updates, bug fixes, technical support, or online technical content updates. Existing Windows Mixed Reality devices will continue to work with Steam until users upgrade to a version of Windows that doesn't include Windows Mixed Reality. </br> </br> This deprecation doesn't impact HoloLens. We remain committed to HoloLens and our enterprise customers. | December 2023 |
| Microsoft Defender Application Guard for Edge <!--8591267-->| [Microsoft Defender Application Guard](/windows/security/application-security/application-isolation/microsoft-defender-application-guard/md-app-guard-overview), including the [Windows Isolated App Launcher APIs](/windows/win32/api/isolatedapplauncher/), is being deprecated for Microsoft Edge for Business and [will no longer be updated](feature-lifecycle.md). Please download the [Microsoft Edge For Business Security Whitepaper](https://edgestatic.azureedge.net/shared/cms/pdfs/Microsoft_Edge_Security_Whitepaper_v2.pdf) to learn more about Edge for Business security capabilities. | December 2023 |
| Legacy console mode <!-- 8577271 -->| The [legacy console mode](/windows/console/legacymode) is deprecated and no longer being updated. In future Windows releases, it will be available as an optional [Feature on Demand](/windows-hardware/manufacture/desktop/features-on-demand-v2--capabilities). This feature won't be installed by default. | December 2023 |