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Windows Server 2022

Windows Server 2022 is the thirteenth major release of Microsoft's server operating system, generally available since August 18, 2021, and built on the foundation of as part of the Long-Term Servicing Channel (LTSC). It emphasizes three core areas: advanced multi-layer security, hybrid integration with services, and a flexible platform for modernizing applications through containers and cloud-native workloads. Available in four editions—Standard, Datacenter, Essentials, and Datacenter: Azure Edition—Windows Server 2022 caters to diverse enterprise needs, with the Essentials edition for small businesses supporting up to 25 users and 50 devices without client access licenses (CALs), the Standard edition supporting up to two virtual machines per license for general-purpose workloads, Datacenter providing unlimited virtualization for highly virtualized environments, and the Azure Edition optimized for cloud-integrated, virtual machine-only deployments without traditional on-premises licensing. Key security enhancements include Secured-core servers with hardware root-of-trust and virtualization-based security (VBS), support for TLS 1.3, DNS-over-HTTPS, and SMB over QUIC for encrypted file sharing over the internet. For hybrid cloud capabilities, it introduces Azure Arc-enabled servers for managing on-premises resources from Azure, along with Azure Automanage for automated configuration and hotpatching to reduce reboots. The application platform sees improvements like reduced container image sizes by up to 40%, GPU partitioning for accelerated computing in containers, and enhanced scalability for with better support and storage replica compression that halves repair times for resilient data volumes. These features enable organizations to securely run workloads, bridge on-premises and cloud environments, and support modern practices.

History

Development

Windows Server 2022, internally codenamed "Iron," entered development shortly after the release of , the previous Long-Term Servicing Channel (LTSC) version, in late 2018. This timeline aligned with Microsoft's biennial cadence for LTSC releases, prioritizing long-term stability and security updates for deployments over frequent feature changes. The project adhered to the LTSC model to deliver a robust platform suited for , minimizing disruptions through extended support periods of up to ten years. The operating system was constructed on the Iron engineering codebase, diverging from consumer branches to incorporate server-specific optimizations while sharing core foundations. It utilizes kernel version 10.0.20348, which supports advanced hardware capabilities and maintains with prior LTSC builds. Engineering priorities during development included strengthening hybrid cloud integrations, elevating default security configurations, and embedding native compatibility to facilitate seamless on-premises to cloud transitions. Internal validation processes placed significant emphasis on compatibility with Secured-core server hardware, ensuring firmware-level protections against sophisticated threats from the ground up.

Announcement and release

Microsoft announced Windows Server 2022 on March 2, 2021, during its Ignite conference, positioning it as the next Long-Term Servicing Channel (LTSC) release following Windows Server 2019. The announcement highlighted its focus on enhanced security, hybrid cloud integration, and support for modern workloads, with an initial preview build made available immediately for testing. The product reached general availability on September 1, 2021, though it was first accessible to customers on August 18, 2021. and editions became available through various channels at that time, while the Essentials edition was exclusively offered via original equipment manufacturers (OEMs) as a customized , without separate media or a distinct release timeline. Initial rollout prioritized enterprise customers, with downloads and licenses distributed through Microsoft Volume Licensing programs such as Enterprise Agreement (EA) and Microsoft Products and Services Agreement (MPSA), alongside availability in the Marketplace for cloud deployments. Retail media and broader public access followed the volume licensing phase, enabling wider adoption across on-premises and hybrid environments. At launch, pricing followed a core-based licensing model, with suggested prices in USD for a 16-core pack set at $1,069 for the edition and $6,155 for the Datacenter edition; the Essentials edition, limited to small businesses with up to 25 users and 50 devices, was priced at $501 through OEM channels and did not require Client Access Licenses (CALs). These prices applied to perpetual licenses, with additional cores licensed in 2-core or 16-core packs as needed.

Features

Security enhancements

Windows Server 2022 introduces Secured-core server capabilities, providing hardware-rooted to protect against and boot-time attacks. This feature leverages (TPM) 2.0 for secure key storage, Secure Boot to verify the integrity of the boot chain, and Hypervisor-protected Code Integrity (HVCI) enabled by default to enforce policies at the level, isolating a secure mode of operation using Virtualization-based Security (VBS). These elements collectively safeguard the system from malicious modifications and runtime , offering increased assurance for mission-critical workloads on certified . To enhance , Windows Server 2022 strengthens () protocols with default signing requirements on domain controllers and support for mandatory configurations, mitigating man-in-the-middle attacks by authenticating SMB packets and encrypting data in transit over untrusted networks. While SMB signing has been a core feature since earlier versions, the 2022 release integrates faster AES-128 and AES-256 cipher suites for improved performance without compromising protection, and introduces SMB over for secure remote access using TLS 1.3. This setup ensures that all compatible clients negotiate secure connections by default in domain environments, reducing exposure to and tampering. The operating system aligns with Zero Trust principles by enhancing identity and endpoint protections, including Credential Guard, which isolates sensitive credentials such as hashes and tickets in a secure VBS enclave to prevent theft by or unauthorized processes. In Windows Server 2022, Credential Guard benefits from deeper integration with Microsoft Defender for Endpoint (formerly ATP), enabling richer telemetry collection for threat detection and response across on-premises and hybrid environments. This combination supports continuous verification of access requests, assuming breach and enforcing least-privilege controls to limit lateral movement by attackers. Windows Server 2022 also supports () for encrypted DNS queries, enhancing privacy and against eavesdropping on DNS traffic. Vulnerability mitigations in Windows Server 2022 include refined (ASLR) configurations that randomize DLL loading and stack allocations more effectively to thwart memory-based exploits, as part of the system's baseline . Additionally, exploit protection baselines, managed through Windows , apply mandatory mitigations like Control Flow Guard (CFG) and data execution prevention (DEP) to block common attack vectors, with customizable policies for server workloads. These features tie briefly into hybrid cloud setups, enabling secure connections to services via integrated telemetry for unified threat monitoring.

Storage improvements

Windows Server 2022 introduces several enhancements to Storage Spaces Direct (S2D), a software-defined storage solution that enables by pooling local drives across servers into a shared storage . It supports configurations of up to 16 nodes per , allowing for scalable deployments in environments. Improved caching mechanisms leverage NVMe tiers to accelerate access, automatically promoting hot to faster storage layers for better performance in read-intensive workloads. Additionally, fault domain awareness has been refined to better detect and respond to hardware failures at the server, , or level, enhancing resiliency without manual intervention. Storage Spaces Direct also features adjustable repair speeds and faster resynchronization, which is twice as fast with reduced variance compared to previous versions. The Resilient File System () receives significant updates in Windows Server 2022, focusing on efficiency and durability for large-scale . Block cloning enables rapid file duplication by copying only pointers rather than entire data blocks, significantly accelerating processes and virtual machine checkpoint merges. Auto-tuning capabilities dynamically adjust allocation and integrity checks based on workload patterns, optimizing performance for both sequential and random I/O operations while maintaining through built-in checksums. Thin provisioning and data deduplication have been optimized for Cluster Shared Volumes (CSVs), enabling more efficient use of resources in failover clusters. These features identify and eliminate redundant data blocks, potentially reducing overhead by up to 50% in virtualized environments with high data similarity, such as VDI or database hosting. Deduplication now integrates seamlessly with to allocate space on-demand, minimizing waste and improving without compromising access speeds. Storage Replica, a block-level replication tool for , gains support in Windows Server 2022, which compresses data during transfer to reduce bandwidth requirements for synchronous and asynchronous replication between sites or clusters. This integration allows for efficient mirroring of volumes, including those using or , ensuring minimal (RPO near zero) and quick recovery times. The Target Server role introduces support, permitting multiple clients to boot from a centralized image over iSCSI, which simplifies deployment in large-scale environments like VDI. Multi-path I/O (MPIO) improvements enhance and load balancing across multiple network paths, increasing throughput and reliability in configurations by dynamically traffic to avoid single points of failure.

Hybrid cloud capabilities

Windows Server 2022 enhances hybrid cloud integration by providing native support for Arc, which allows on-premises servers to be managed as first-class resources. This enables centralized governance, including policy enforcement through Policy and monitoring via Monitor, without requiring agents on older systems. Administrators can use the built-in Arc Setup wizard to connect Windows Server 2022 instances to Arc, projecting them into Resource Manager for unified inventory and compliance reporting across hybrid environments. For , Windows Server 2022 integrates with Site Recovery to replicate on-premises workloads to , supporting automated testing that validates recovery plans without impacting production systems. This feature orchestrates replication, , and failback for Arc-enabled servers, ensuring minimal in setups by leveraging 's global infrastructure for secondary site protection. Identity management in hybrid scenarios is improved through enhanced support for Microsoft Entra Connect (formerly Azure AD Connect), which synchronizes on-premises Active Directory with Microsoft Entra ID on Windows Server 2022. This bidirectional synchronization maintains consistent user identities, groups, and attributes across environments, facilitating secure access to both on-premises and cloud resources. Additionally, Hybrid Microsoft Entra ID join allows devices in on-premises domains to register with Microsoft Entra ID, enabling seamless single sign-on and conditional access policies in mixed deployments. Windows Admin Center receives updates in Windows Server 2022 to support hybrid workload management, offering web-based tools for migrating and monitoring servers between on-premises and . These include streamlined connections to services for tasks like VM provisioning and extension management, centralizing hybrid operations without additional infrastructure.

Virtualization and management tools

Windows Server 2022 enhances with advanced security and flexibility features for virtualized environments. Shielded Virtual Machines (VMs) integrate with Host Guardian support through the guarded fabric architecture, enabling encrypted VMs that run only on trusted hosts to protect against threats like or unauthorized access. This setup uses -based security (VBS) and a virtual (vTPM) to ensure VM isolation and integrity. Nested virtualization in allows developers and testers to run a full host inside a guest VM, facilitating scenarios like pipelines or nested clustering without dedicated physical hardware. This feature, building on prior support, now includes better performance for nested scenarios in Windows Server 2022, such as dynamic memory allocation within the nested environment. Live Migration benefits from enhanced compression algorithms that reduce network bandwidth usage during VM transfers, minimizing downtime in bandwidth-constrained environments. Administrators can select compression levels via to balance speed and CPU overhead, enabling seamless VM movement across cluster nodes with minimal impact on availability. Windows Admin Center, updated to version 2109 and later, serves as a centralized, browser-based dashboard for managing clusters, providing tools for VM provisioning, monitoring, and troubleshooting. It includes an extension marketplace for adding custom tools and supports (RBAC) to enforce security policies across administrative tasks. 7 integration in Windows Server 2022 enables cross-platform scripting for tasks, with Desired State Configuration () facilitating automated, declarative deployments of configurations. resources allow defining VM states, such as memory limits or network settings, and enforcing compliance across environments without manual intervention. Support for Linux and Unix workloads is bolstered through the (WSL) within VMs, allowing seamless execution of Linux binaries and tools on Windows hosts for hybrid development. This integration enables running containerized Linux applications or scripts inside VMs, enhancing compatibility for diverse enterprise workloads.

Containers and Kubernetes support

Windows Server 2022 improves the platform for containers and cloud-native applications, reducing Windows container image sizes by up to 40% and enabling 30% faster startup times. It introduces GPU partitioning (GPU-PV) for sharing GPUs among containers, supporting accelerated computing workloads like . For , enhancements include native and Dual 16 support for better networking scalability, along with improvements to storage replica compression that halves repair times for resilient data volumes. VM storage can leverage Storage Spaces for resilient, scalable volumes that support and .

Editions

Standard Edition

Windows Server 2022 Standard Edition is designed for small to medium-sized enterprises requiring robust server functionality with limited capabilities. It provides core services such as and sharing, domain-based networking, and basic application hosting, making it suitable for environments with low-density or non-virtualized workloads. This edition supports up to two Operating System Environments (OSEs), which include the physical host and virtual machines or containers, thereby addressing basic needs without the scalability of unlimited instances found in higher editions. Licensing for the Standard Edition follows a per-core model, with a base requirement of 16 cores per ; additional licenses can be stacked in 2-core or 16-core increments for servers exceeding this minimum. Each 16-core license grants rights to run the operating system in one physical OSE plus two virtual OSEs or containers, with all physical cores on the requiring licensing. It fully supports essential features including for virtualization, Domain Services for , and most enhancements like Secured-core Server and Credential Guard, as well as storage improvements such as Storage Spaces Direct (limited to two nodes) and . The edition targets organizations with straightforward IT needs, such as hosting line-of-business applications or managing internal networks, where advanced clustering or unlimited is unnecessary. is available exclusively in 64-bit architecture, offering two options: for a minimal, headless deployment that reduces the , or Server with Desktop Experience for a full graphical interface akin to traditional Windows environments. At launch, the Standard Edition was priced at $1,069 for the 16-core license pack and made available through (OEM) channels and programs, ensuring accessibility for procurement.

Datacenter Edition

Windows Server 2022 Datacenter Edition serves as the flagship offering for datacenters, emphasizing unlimited and software-defined to support demanding workloads. This edition enables organizations to deploy an unlimited number of virtual machines (VMs) and containers on fully licensed physical hardware, facilitating scalable environments without restrictions on the number of operating system environments (OSEs). Licensing follows a per-core model, requiring a minimum of 16 cores per as the base , which is stackable in increments of 2 or 16 cores to cover additional physical processors. This structure ensures comprehensive coverage for high-density configurations, with Client Licenses (CALs) needed separately for or access. The edition's starts at a list price of $6,155 for the 16-core base , reflecting its enterprise-grade capabilities, and includes eligibility for Hybrid Benefit to reduce costs by applying existing on-premises licenses toward deployments with Software Assurance. Key advanced features position Datacenter Edition for software-defined datacenter (SDD) architectures, including full support for Storage Spaces Direct, which enables by pooling local storage across cluster nodes for resilient, scalable storage solutions. Exclusive capabilities further enhance security and management, such as complete Shielded VM support to protect virtual machines from host-level threats using guarded fabrics, and Network Controller for centralized management of (SDN) in multi-tenant environments. Datacenter Edition targets large organizations requiring robust , high-availability clustering, and SDN integration to handle complex, mission-critical operations across on-premises . Its boundless scalability supports enterprise-level deployments, distinguishing it as the core on-premises solution, while cloud-native extensions are available in the Azure Edition variant.

Essentials Edition

Windows Server 2022 Essentials Edition is designed as an entry-level solution for small organizations, providing essential server functionalities without the complexity of advanced features. Available exclusively through OEM server hardware partners, it emphasizes ease of use through integrated tools for common tasks like and remote access, making it suitable for environments lacking dedicated IT staff. This edition aligns with Microsoft's cloud-connected first approach, enabling seamless integration with services for hybrid scenarios while maintaining a focus on on-premises deployment. Licensing for Essentials Edition is streamlined to support up to 25 users and 50 devices without requiring separate Client Access Licenses (CALs), simplifying compliance for small teams. The edition is licensed per server with a limit of 10 CPU cores and support for a single physical instance or one , optimized primarily for physical hardware deployments on single-socket servers. A single license covers the entire server, with no need for additional core packs beyond the built-in limit. Key features include a built-in that centralizes of file sharing, remote desktop access, and automated backups, allowing administrators to configure services via intuitive wizards. This setup facilitates quick deployment of shared resources and data protection without extensive scripting or third-party tools. While it shares core security enhancements like Secured-core Server capabilities with other editions, Essentials prioritizes simplicity over advanced . The edition targets businesses with fewer than 25 users seeking straightforward server management without deep IT expertise, such as small offices handling basic networking, , and needs. Wizard-based configurations guide users through initial setup, including joining and client connectivity, reducing the learning curve for non-specialists. Limitations include the absence of clustering for and advanced (SDN) features, restricting its use to non-mission-critical workloads. There is no direct path to or Datacenter editions; transitioning requires a fresh and relicensing. The edition follows the Windows Server 2022 lifecycle, with mainstream support ending October 13, 2026, and extended support until October 14, 2031, after which no further updates are provided without migration. Pricing for a Windows Server 2022 Essentials license is set at $501 per server, typically bundled and available through authorized OEM partners such as Dell and HPE for pre-installed deployments on compatible hardware.

Azure Edition

Windows Server 2022 Datacenter: Azure Edition was introduced alongside the general release of Windows Server 2022 in August 2021, specifically designed as a cloud-optimized variant of the Datacenter Edition to support hybrid cloud deployments and Azure Stack environments. This edition builds on the core capabilities of the Datacenter Edition while incorporating Azure-native integrations to streamline management and updates in cloud-connected scenarios. Key unique features of Azure Edition include the native integration of Azure Update Manager, which enables automated, policy-driven patching directly from for reduced administrative overhead. It also supports Hotpatch technology, allowing monthly security updates to be applied without requiring system reboots, thereby minimizing downtime in virtualized environments. Additionally, the edition comes with a built-in Azure Arc agent, facilitating seamless extension of Azure , , and governance to on-premises or edge servers. Licensing for Azure Edition follows the per-core model identical to the Datacenter Edition, with support for the Hybrid Benefit program that allows organizations to apply existing on-premises licenses to reduce costs when deploying in . It is also eligible for Extended Security Updates (ESU) after the end-of-support date, providing continued security patches for up to three additional years. This edition targets organizations managing hybrid infrastructures, particularly those utilizing for cloud bursting from on-premises datacenters or deploying on HCI for . It supports advanced scenarios like through secure enclaves, enhancing data protection in multi-tenant cloud environments. Azure Edition is primarily available as pre-configured virtual machine images through the Marketplace, enabling quick deployment in Virtual Machines or Stack. Evaluation ISOs are offered via the Evaluation Center for testing on qualified , though production use typically requires licensing.

System requirements

Hardware specifications

Windows Server 2022 requires a minimum 1.4 GHz 64-bit compatible with the x64 instruction set. The processor must support NX and DEP, CMPXCHG16b, LAHF/SAHF, PrefetchW, SSE4.2, POPCNT, and (EPT or NPT). Systems can scale up to 64 sockets with unlimited cores. The minimum memory requirement is 512 for Server Core installations and 2 GB for Server with Desktop Experience; 4 GB is recommended for the latter. The maximum supported is 256 terabytes for hosts with 4-level paging or 4 petabytes for hosts with 5-level paging support. Error-correcting code () type or similar technology is recommended for physical hosts. Storage needs at least 32 GB of disk space on the system partition for installation, though more is recommended for updates and applications. Secured-core servers additionally require 2.3.1c firmware with Secure Boot support and TPM 2.0 hardware. A network adapter is required. For installations using the Desktop Experience, a (1024 × 768) or higher resolution graphics device is necessary. Windows Server 2022 supports only 64-bit processors and does not support 32-bit or Itanium architectures. Additional features like SMBIOS 2.4 and IEEE 1588-compliant clocks are required for certain server certifications and time synchronization capabilities. Virtualization requires hardware support such as Intel VT or AMD-V.

Software prerequisites

Windows Server 2022 requires a UEFI 2.3.1c-based system and firmware that supports Secure Boot for optimal security and compatibility, though legacy BIOS boot mode is also supported with UEFI mode recommended. When used as a Hyper-V host, Windows Server 2022 supports a range of guest operating systems in machines, including various Windows Server versions such as 2025, 2022, 2019, and 2016, as well as and client editions. It also accommodates Linux distributions like 20.04 LTS, 22.04 LTS, and 24.04 LTS; 8.x, 9.x, and 10.x; 8 and 9; 11, 12, and 13; along with versions 12, 13, and 14. The operating system includes .NET Framework 4.8 by default, providing compatibility for legacy applications built on earlier .NET versions. Additionally, it supports the .NET 6 runtime for developing and running modern cross-platform applications, though .NET 6 reached end of support in November 2024. For Domain Services, Windows Server 2022 supports forest and domain functional levels up to , enabling compatibility with domain controllers running or later while maintaining with older levels down to Windows Server 2008. Windows Server 2022 is compatible with (WSUS) 3.0 SP2 and later versions for receiving updates, provided the WSUS server has the necessary cumulative updates installed, such as KB 4039929 or newer. The operating system is available exclusively in the x64 architecture, with no support for ARM64.

Deployment

Installation methods

Windows Server 2022 can be deployed using ISO image files available for download from the Microsoft Evaluation Center, which support both Standard and Datacenter editions in 64-bit architecture. These ISO files are typically around 4-5 GB in size and can be used to create bootable installation media. To prepare physical installation media, users can burn the ISO to a DVD or create a bootable USB flash drive using third-party tools such as Rufus, as the ISO employs a UEFI-compatible format that requires specific formatting like FAT32 for USB drives. During the installation process, administrators select from two primary modes for Standard and Datacenter editions: , a minimal installation option without a that reduces the and resource usage, or Server with Desktop Experience, which includes the full graphical shell and tools for a more familiar administrative environment. Additionally, Nano Server is available exclusively as a base image for Windows containers in Windows Server 2022, providing a lightweight, headless option optimized for containerized workloads without support for traditional VM or physical deployments. For automated deployments, Windows Server 2022 supports unattended installations via answer files in unattend.xml format, which configure settings such as product key, partitioning, and network during setup. These files can be integrated with (WDS) for network-based imaging, enabling scalable rollouts across multiple machines without manual intervention. Upgrade paths allow in-place upgrades from or 2019 to Windows Server 2022, preserving settings, roles, and data while updating the operating system core. This process is initiated by running setup.exe from the Windows Server 2022 installation media on the existing server, though Microsoft documentation notes that a clean installation may yield better performance by avoiding potential legacy compatibility issues. In cloud environments, Windows Server 2022 Datacenter: Azure Edition is deployed via pre-configured images available in the Marketplace, supporting and Desktop Experience options for seamless integration with Azure services like Arc-enabled servers.

Initial configuration

After , the initial configuration of Windows Server 2022 involves setting up , , and tools to prepare the server for use. This process varies depending on whether the installation is the full Desktop Experience or the minimal option, with the latter relying heavily on command-line tools for efficiency and reduced . Configuration typically begins with basic networking and licensing, followed by role installations and security hardening. For Server Core installations, the Server Configuration tool (Sconfig.cmd) serves as the primary for initial setup, launching automatically upon first login to guide administrators through key tasks. Sconfig provides options for joining a or workgroup (option 1), adding local administrators (option 3), configuring remote management for and (option 4), enabling Remote Desktop (option 7), setting update preferences (option 5), installing updates (option 6), Windows activation (option 11), and configuring network adapters (option 8). For example, under option 8, users can view and configure addresses, DNS settings, and adapter states using integrated commands like netsh set address. This tool streamlines post-installation without requiring a graphical , supporting both local and remote configurations via WinRM. In full Desktop Experience installations, network configuration can be performed using the Settings app or commands for initial assignment and enabling (RDP). Administrators run interface ipv4 set address "Local Area Connection" static 192.168.1.10 255.255.255.0 192.168.1.1 to assign a static , followed by enabling RDP through System Properties or with Enable-NetFirewallRule -DisplayGroup "Remote Desktop". These steps ensure connectivity before proceeding to advanced setups. Roles and features, such as for or DNS Server, are installed post-setup using Server Manager in the or cmdlets. In Server Manager, select Manage > Add Roles and Features to launch the wizard, which scans for prerequisites and installs components like Domain Services without rebooting unless required. Alternatively, the Install-WindowsFeature cmdlet allows scripted installation, e.g., Install-WindowsFeature -Name -IncludeManagementTools -Restart, enabling quick deployment of server roles like for hosting. This process supports adding capabilities incrementally to match workload needs. Security baselines are applied early to enforce compliance, often using Security Technical Implementation Guides (STIGs) from the (DISA) tailored for Windows Server 2022. These guides recommend configurations for hardening the OS, such as disabling unnecessary services and enforcing least privilege. For local application, the Microsoft Security Compliance Toolkit's LGPO.exe utility imports policy files derived from STIGs or Microsoft baselines, allowing administrators to merge and apply Group Policy Objects (GPOs) via command-line: lgpo.exe /t baseline.inf. This ensures alignment with standards like those in the Windows Server 2022 , which covers over 100 controls for vulnerability mitigation. First-run tasks include activating the edition license, typically using the Software License Management Tool (slmgr.vbs) with slmgr /ipk followed by slmgr /ato for online activation, or through Sconfig option 11 in . Joining a is accomplished via Sconfig option 1, providing domain credentials to integrate the server into , or using PowerShell's Add-Computer cmdlet for scripted joins. Finally, setting up involves downloading and installing the browser-based management tool from , which connects to the server for ongoing oversight after initial authentication via local or accounts.

Support and updates

Lifecycle phases

Windows Server 2022 adheres to Microsoft's Fixed Lifecycle Policy, which guarantees a minimum of five years of mainstream support followed by five years of extended support for its editions, including Datacenter, Datacenter: Edition, Essentials, and Standard. This policy ensures predictable support timelines, enabling organizations to plan deployments and upgrades effectively. The product reached general availability on August 18, 2021, marking the start of its support lifecycle. Mainstream support for Windows Server 2022 concludes on October 13, 2026, during which delivers new features, non-security fixes for defects and reliability issues, and security updates to address vulnerabilities. This phase emphasizes comprehensive servicing to maintain functionality and security for production environments. Following mainstream support, extended support begins on October 14, 2026, and extends until October 14, 2031, providing security updates at no additional charge while limiting non-security updates to paid incidents only. Beyond the extended support end date, organizations can opt into the Extended Security Updates (ESU) program, a paid offering that delivers critical and important security updates for up to three additional years to mitigate risks from continued use of the software. Windows Server 2022 operates primarily under the Long-Term Servicing Channel (LTSC) model, designed for stability in mission-critical workloads by delivering monthly cumulative updates that incorporate quality improvements and security patches without introducing new features akin to those in the former Semi-Annual Channel. Since September 2023, an Annual Channel (AC) servicing option has been available alongside LTSC, offering more frequent releases for scenarios requiring rapid access to enhancements, though LTSC remains the recommended path for most on-premises deployments. For retirement planning, advises organizations to begin from Windows Server 2022 to Windows Server 2025 ahead of the mainstream support endpoint in 2026 to ensure ongoing access to full servicing. Supported migration paths include in-place upgrades for non-clustered systems, allowing direct transitions while preserving settings, roles, and data. The Datacenter: Azure Edition aligns with the same lifecycle phases as other editions, benefiting from perpetual Azure Hybrid Use rights that permit the application of existing on-premises licenses to virtual machines throughout the period. This integration supports hybrid strategies by synchronizing the edition's lifecycle with 's servicing model, including features like hotpatching for reduced until the end of .

Cumulative updates

Windows Server 2022 follows the Long-Term Servicing Channel (LTSC) model, where monthly cumulative updates (CUs) deliver all previous updates along with new security and quality fixes, distributed via or (WSUS). These CUs ensure incremental improvements without requiring full feature updates, allowing administrators to maintain stability while addressing vulnerabilities and bugs. Notable early CUs include the September 13, 2022 release (KB5017316), which includes quality improvements and security fixes. In January 2024, updates introduced hotpatching preview capabilities for the Datacenter: Edition, enabling security patches without server reboots to minimize downtime in cloud environments. The October 2024 CU (KB5044281) addressed issues such as SDN performance for large-scale deployments, sporadic Remote Desktop connection disruptions, and container networking problems on . Feature additions have been enabled through optional packages in CUs, such as over enhancements in the June 2024 update (KB5039227), which activated client certificate authentication for secure over connections. CUs have addressed key known issues, including resolutions for PrintNightmare-related print spooler vulnerabilities through ongoing security patches starting in 2022 updates. As of November 17, 2025, the latest CU is KB5068787 (November 11, 2025, OS Build 20348.4405), which includes the latest security fixes and quality improvements. Full changelogs and optional enablement packages for new features are documented on Learn, where administrators can review and deployment guidance.

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