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windows/whats-new/deprecated-features-resources.md
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---
title: Resources for deprecated features in the Windows client
description: Resources and details for deprecated features in the Windows client.
ms.date: 03/25/2024
ms.date: 06/03/2024
ms.service: windows-client
ms.subservice: itpro-fundamentals
ms.localizationpriority: medium
@ -21,6 +21,14 @@ appliesto:
This article provides additional resources about [deprecated features for Windows client](deprecated-features.md) that may be needed by IT professionals. The following information is provided to help IT professionals plan for the removal of deprecated features:
## NTLM
Customers concerned about NTLM usage in their environments are encouraged to utilize [NTLM auditing](/previous-versions/windows/it-pro/windows-10/security/threat-protection/security-policy-settings/network-security-restrict-ntlm-audit-ntlm-authentication-in-this-domain) to [investigate how NTLM is being used](https://techcommunity.microsoft.com/t5/ask-the-directory-services-team/ntlm-blocking-and-you-application-analysis-and-auditing/ba-p/397191).
In many cases, applications should be able to replace NTLM with Negotiate using a one-line change in their `AcquireCredentialsHandle` request to the SSPI. One known exception is for applications that have made hard assumptions about the maximum number of round trips needed to complete authentication. In most cases, Negotiate will add at least one additional round trip. Some scenarios may require additional configuration. For more information, see [Kerberos authentication troubleshooting guidance](/troubleshoot/windows-server/windows-security/kerberos-authentication-troubleshooting-guidance).
Negotiate's built-in fallback to NTLM is preserved to mitigate compatibility issues during this transition. For updates on NTLM deprecation, see [https://aka.ms/ntlm](https://aka.ms/ntlm).
## WordPad
WordPad will be removed from all editions of Windows starting in Windows 11, version 24H2 and Windows Server 2025. As a result, Windows will no longer have a built-in, default RTF reader. We recommend Microsoft Word for rich text documents like .doc and .rtf and Notepad for plain text documents like .txt. The following binaries will be removed as a result of WordPad removal:

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windows/whats-new/deprecated-features.md
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---
title: Deprecated features in the Windows client
description: Review the list of features that Microsoft is no longer actively developing in Windows 10 and Windows 11.
ms.date: 05/30/2024
ms.date: 06/03/2024
ms.service: windows-client
ms.subservice: itpro-fundamentals
ms.localizationpriority: medium
@ -47,6 +47,7 @@ The features in this article are no longer being actively developed, and might b
| Feature | Details and mitigation | Deprecation announced |
|---|---|---|
| NTLM <!--8396018-->| All versions of [NTLM](/windows/win32/secauthn/microsoft-ntlm), including LANMAN, NTLMv1, and NTLMv2, are no longer under active feature development and are deprecated. Use of NTLM will continue to work in the next release of Windows Server and the next annual release of Windows. Calls to NTLM should be replaced by calls to Negotiate, which will try to authenticate with Kerberos and only fall back to NTLM when necessary. For more information, see [Resources for deprecated features](deprecated-features-resources.md). | June 2024 |
| Driver Verifier GUI (verifiergui.exe) <!--8995057--> | Driver Verifier GUI, verifiergui.exe, is deprecated and will be removed in a future version of Windows. You can use the [Verifier Command Line](/windows-hardware/drivers/devtest/verifier-command-line) (verifier.exe) instead of the Driver Verifier GUI.| May 2024 |
| NPLogonNotify and NPPasswordChangeNotify APIs <!--8787264--> | Starting in Windows 11, version 24H2, the inclusion of password payload in MPR notifications is set to disabled by default through group policy in [NPLogonNotify](/windows/win32/api/npapi/nf-npapi-nplogonnotify) and [NPPasswordChangeNotify](/windows/win32/api/npapi/nf-npapi-nppasswordchangenotify) APIs. The APIs may be removed in a future release. The primary reason for disabling this feature is to enhance security. When enabled, these APIs allow the caller to retrieve a user's password, presenting potential risks for password exposure and harvesting by malicious users. To include password payload in MPR notifications, set the [EnableMPRNotifications](/windows/client-management/mdm/policy-csp-windowslogon#enablemprnotifications) policy to `enabled`.| March 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, recommending specifically that RSA keys should have a key length of 2048 bits or longer. For more information, see [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). 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.| March 2024|