Windows Server removed features

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Updating removed-deprecated-features-windows-server.md

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3434 | Failover Clustering Cluster Sets |The Failover Clustering Cluster Sets feature is no longer in active feature development and is deprecated. |

3535 | Network Load Balancing (NLB) | NLB is no longer in active feature development and is deprecated. Consider using a Software Load Balancer (SLB) as an alternative. To learn more about SLB, see [What is Software Load Balancer (SLB) for SDN?](/azure/azure-local/concepts/software-load-balancer?context=/windows-server/context/windows-server-edge-networking) |

3636 | NTLM | [NTLMv1](/windows/win32/secauthn/microsoft-ntlm) is removed. LANMAN and NTLMv2 are no longer under active feature development and are deprecated. NTLMv2 will continue to work but will be removed from Windows Server in a future release. Replace calls to NTLM with calls to [Negotiate](/windows/win32/secauthn/microsoft-negotiate), which tries to authenticate with Kerberos and only fall back to NTLM when necessary. For more information, see [The evolution of Windows authentication](https://techcommunity.microsoft.com/t5/windows-it-pro-blog/the-evolution-of-windows-authentication/ba-p/3926848). |

37 −| Remote Mailslots | Remote Mailslots are deprecated. The Remote Mailslot protocol, which was initially introduced in MS DOS, is a dated and simple IPC method that is both unreliable and insecure. This protocol was first disabled by default in [Windows 11 Insider Preview Build 25314](https://blogs.windows.com/windows-insider/2023/03/08/announcing-windows-11-insider-preview-build-25314/). For more information on Remote Mailslots, see [About Mailslots](/windows/win32/ipc/about-mailslots) and [[MS-MAIL]: Remote Mailslot Protocol](/openspecs/windows_protocols/ms-mail/8ea19aa4-6e5a-4aed-b628-0b5cd75a1ab9). |

37 +| Remote Mailslots | Remote Mailslots are deprecated. The Remote Mailslot protocol, which was initially introduced in MS DOS, is a dated and simple IPC method that is both unreliable and insecure. This protocol was first disabled by default in [Windows 11 Insider Preview Build](https://blogs.windows.com/windows-insider/2023/03/08/announcing-windows-11-insider-preview-build-25314/). For more information on Remote Mailslots, see [About Mailslots](/windows/win32/ipc/about-mailslots) and [[MS-MAIL]: Remote Mailslot Protocol](/openspecs/windows_protocols/ms-mail/8ea19aa4-6e5a-4aed-b628-0b5cd75a1ab9). |

3838 | TLS 1.0 TLS 1.1 | TLS versions 1.0 and 1.1 are deprecated per internet standards and regulatory bodies due to security concerns mentioned in [RFC 8996](https://www.rfc-editor.org/rfc/rfc8996). These versions are disabled by default in Windows Server 2025. For more information on TLS deprecation, see [TLS 1.0 and TLS 1.1 deprecation in Windows](/windows/win32/secauthn/tls-10-11-deprecation-in-windows). |

3939 | WebDAV Redirector service | The WebDAV Redirector service is deprecated. The service isn't installed by default in Windows Server. For more information on the WebDAV Redirector service, see [WebDAV - Win32 apps](/windows/win32/webdav/webdav-portal). |

4040 | Windows Internal Database (WID) | WID is used by several roles, including AD FS, AD RMS, IPAM, RD Connection Broker, and WSUS. Consider using a free or full version of SQL Server for these roles. WID will be removed from Windows in a future release. To learn more, see [SQL Server editions](/sql/sql-server/editions-and-components-of-sql-server-2022). |

41 −| Windows Management Instrumentation Command-line (WMIC) | Beginning with Windows Server 2025, WMIC is available as a Feature on Demand (FOD). It can be added with the `DISM /Add-Capability` command. It will be removed from Windows in a future release. [PowerShell for WMI](/powershell/scripting/learn/ps101/07-working-with-wmi) replaces the WMIC tool. Use PowerShell or programmatically query WMI as a replacement for WMIC. To learn more about WMIC deprecation, see [WMI command line (WMIC) utility deprecation: Next steps](https://techcommunity.microsoft.com/t5/windows-it-pro-blog/wmi-command-line-wmic-utility-deprecation-next-steps/ba-p/4039242). |

41 +| Windows Management Instrumentation Command-line (WMIC) | Beginning with Windows Server 2025, WMIC is available as a Feature on Demand (FOD). It can be added with the `DISM /Add-Capability` command. It will be removed from Windows in a future release. [PowerShell for WMI](/powershell/scripting/learn/ps101/07-working-with-wmi) replaces the WMIC tool. Use PowerShell or programmatically query WMI as a replacement for WMIC. To learn more about WMIC depreciation, see [WMI command line (WMIC) utility deprecation: Next steps](https://techcommunity.microsoft.com/t5/windows-it-pro-blog/wmi-command-line-wmic-utility-deprecation-next-steps/ba-p/4039242). |

4242 | VBScript | VBScript is available as an FOD and preinstalled in Windows Server 2025, before its removal from the operating system in a later release. As a replacement for VBScript, use PowerShell for automating tasks, custom actions, or scripts. To learn more about migrating to PowerShell, see [The VBScript-to-Windows PowerShell Conversion Guide](/previous-versions/windows/it-pro/windows-powershell-1.0/ee221101(v=msdn.10)). If you're using VBScript within your webpage, functionality is currently limited to browsers predating Internet Explorer 11. We recommend migrating your webpages to JavaScript, which provides cross-browser compatibility and modern browser support. |

4343 | Windows Server Update Services (WSUS) | WSUS is no longer actively developed. All the existing capabilities and content continue to be available for your deployments. |

4444 | Rivest Cipher 4 (RC4) usage in Kerberos | RC4 usage in the Kerberos authentication protocol is deprecated. RC4 is a weak algorithm that can be abused for stealing credentials. Stronger algorithms, like AES-SHA1, should be used instead. For more information, see [Detect and Remediate RC4 Usage in Kerberos](../security/kerberos/detect-remediate-rc4-kerberos.md). |

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100100 |--|--|

101101 | Data Encryption Standard (DES) | DES, the symmetric-key block encryption cipher, isn't considered secure against modern cryptographic attacks. It's replaced by more robust encryption algorithms. DES was disabled starting with Windows Server 2008 R2 and is removed from Windows Server 2025 and later releases. |

102102 | IIS 6 Management Console (Web-Lgcy-Mgmt-Console) | The console is removed after being no longer developed in Windows Server 2019. You should also start migrating from IIS 6.0 or earlier versions to the latest version of IIS, which is always available in the most recent release of Windows Server. |

103 +| Internet Explorer | The Internet Explorer 11 desktop application is [retired and out of support](https://aka.ms/IEJune15Blog) as of June 15, 2022. The standalone Internet Explorer application is removed from Windows Server 2025. To access older, legacy sites, use [IE mode in Microsoft Edge](https://aka.ms/IEmodewebsite). To disable IE mode for compliance, see [Configure IE mode Policies](/deployedge/edge-ie-mode-policies). |

103104 | NTLMv1 | Replace calls to NTLM with calls to [Negotiate](/windows/win32/secauthn/microsoft-negotiate), which tries to authenticate with Kerberos and only falls back to NTLM when necessary. For more information, see [The evolution of Windows authentication](https://techcommunity.microsoft.com/t5/windows-it-pro-blog/the-evolution-of-windows-authentication/ba-p/3926848). |

104105 | Windows PowerShell 2.0 | Starting with the [September 2025 update](https://support.microsoft.com/en-us/topic/september-9-2025-kb5065426-update-for-windows-server-2025-os-build-26100-6584-6a59dc6a-1ff2-48f4-b375-81e93deee5dd), Windows Server 2025 no longer includes Windows PowerShell 2.0. If Windows PowerShell 2.0 was installed before the September update, you can no longer use it. Windows PowerShell 2.0 applications and components should be migrated to PowerShell 5.0 or later. To learn more about the deprecation, see [Windows PowerShell 2.0 Deprecation](https://devblogs.microsoft.com/powershell/windows-powershell-2-0-deprecation/). |

105106 | SMTP Server | Because SMTP Server features were removed from Windows Server 2025, there's no replacement within the operating system. Consider using Exchange Server or a non-Microsoft SMTP server as an alternative. To learn more about enabling SMTP connection in Exchange Server, see [Receive connectors in Exchange Server](/exchange/mail-flow/connectors/receive-connectors). |

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