[In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets
What the source says
Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced package footprint and a security-first design. Key highlights: Azure-tuned kernel — Linux 6.18 LTS with improved Hyper-V integration, GPU/AI accelerator support, and new hardware drivers Secure by default — Secure Boot, Trusted Launch, SELinux support, kernel hardening, and SBOMs published with target SLSA Level 3 Minimal footprint — Ships only the packages required for cloud workloads, reducing attack surface from day one No additional OS licensing cost — Included with Azure compute; no separate OS licensing fees or support contracts Microsoft-owned supply chain — From kernel to CVE response, enabling fast-track Critical/High CVE patches with monthly security updates Predictable lifecycle —full support with LTS kernel and annual HWE kernel updates for new hardware platforms Container images — Base, and distroless images available on Microsoft Container Registry (MCR) Learn more: Azure Linux 4.0 Build blog post Azure Linux on GitHub Release notes
Who is affected: The audience described by the Microsoft update is represented by: [In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced
Why it matters: The change matters because the official source describes: [In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced
Urgency: Monitor
Next action: Review affected accounts with the customer using the official announcement.
Commercial opportunities
Use the verified change to open a scoped customer conversation.
Technical actions
Assess whether the documented change intersects the customer's current stack.
Questions to ask the customer
Does this documented change affect a product or workload in scope?
Risks and objections
The official source does not establish facts beyond the quoted material.
Points to confirm
The effective date is unknown and must be confirmed before scheduling action.
Reading for it_manager_dsi
Who is affected: The audience described by the Microsoft update is represented by: [In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced
Why it matters: The change matters because the official source describes: [In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced
Urgency: Monitor
Next action: Assess technical dependencies and ownership against the official update.
Commercial opportunities
Offer a scoped technical-readiness assessment if the customer confirms impact.
Technical actions
Assess whether the documented change intersects the customer's current stack.
Questions to ask the customer
Does this documented change affect a product or workload in scope?
Risks and objections
The official source does not establish facts beyond the quoted material.
Points to confirm
The effective date is unknown and must be confirmed before scheduling action.
Reading for partner_channel
Who is affected: The audience described by the Microsoft update is represented by: [In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced
Why it matters: The change matters because the official source describes: [In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced
Urgency: Monitor
Next action: Prepare a source-backed customer conversation and confirm the affected estate.
Commercial opportunities
Qualify a partner-led assessment only after customer scope is confirmed.
Technical actions
Assess whether the documented change intersects the customer's current stack.
Questions to ask the customer
Does this documented change affect a product or workload in scope?
Risks and objections
The official source does not establish facts beyond the quoted material.
Points to confirm
The effective date is unknown and must be confirmed before scheduling action.
Reading for sales_manager
Who is affected: The audience described by the Microsoft update is represented by: [In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced
Why it matters: The change matters because the official source describes: [In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced
Urgency: Monitor
Next action: Review portfolio exposure with account owners using the official source.
Commercial opportunities
Prioritize accounts that confirm affected products or workloads.
Technical actions
Assess whether the documented change intersects the customer's current stack.
Questions to ask the customer
Does this documented change affect a product or workload in scope?
Risks and objections
The official source does not establish facts beyond the quoted material.
Points to confirm
The effective date is unknown and must be confirmed before scheduling action.
Evidence and traceability
Each excerpt is linked to the primary source. Current raw version: 242.
Raw capture : 2026-08-26T14:18:57.653130+00:00 — hash a8f26dafd6aa78b2…
Event
[In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced package footprint and a security-first design. Key highlights: Azure-tuned kernel — Linux 6.18 LTS with improved Hyper-V integration, GPU/AI accelerator support, and new hardware drivers Secure by default — Secure Boot, Trusted Launch, SELinux support, kernel hardening, and SBOMs published with target SLSA Level 3 Minimal footprint — Ships only the packages required for cloud workloads, reducing attack surface from day one No additional OS licensing cost — Included with Azure compute; no separate OS licensing fees or support contracts Microsoft-owned supply chain — From kernel to CVE response, enabling fast-track Critical/High CVE patches with monthly security updates Predictable lifecycle —full support with LTS kernel and annual HWE kernel updates for new hardware platforms Container images — Base, and distroless images available on Microsoft Container Registry (MCR) Learn more: Azure Linux 4.0 Build blog post Azure Linux on GitHub Release notes
[In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced package footprint and a security-first design. Key highlights: Azure-tuned kernel — Linux 6.18 LTS with improved Hyper-V integration, GPU/AI accelerator support, and new hardware drivers Secure by default — Secure Boot, Trusted Launch, SELinux support, kernel hardening, and SBOMs published with target SLSA Level 3 Minimal footprint — Ships only the packages required for cloud workloads, reducing attack surface from day one No additional OS licensing cost — Included with Azure compute; no separate OS licensing fees or support contracts Microsoft-owned supply chain — From kernel to CVE response, enabling fast-track Critical/High CVE patches with monthly security updates Predictable lifecycle —full support with LTS kernel and annual HWE kernel updates for new hardware platforms Container images — Base, and distroless images available on Microsoft Container Registry (MCR) Learn more: Azure Linux 4.0 Build blog post Azure Linux on GitHub Release notes
[In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced package footprint and a security-first design. Key highlights: Azure-tuned kernel — Linux 6.18 LTS with improved Hyper-V integration, GPU/AI accelerator support, and new hardware drivers Secure by default — Secure Boot, Trusted Launch, SELinux support, kernel hardening, and SBOMs published with target SLSA Level 3 Minimal footprint — Ships only the packages required for cloud workloads, reducing attack surface from day one No additional OS licensing cost — Included with Azure compute; no separate OS licensing fees or support contracts Microsoft-owned supply chain — From kernel to CVE response, enabling fast-track Critical/High CVE patches with monthly security updates Predictable lifecycle
[In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced package footprint and a security-first design. Key highlights: Azure-tuned kernel — Linux 6.18 LTS with improved Hyper-V integration, GPU/AI accelerator support, and new hardware drivers Secure by default — Secure Boot, Trusted Launch, SELinux support, kernel hardening, and SBOMs published with target SLSA Level 3 Minimal footprint — Ships only the packages required for cloud workloads, reducing attack surface from day one No additional OS licensing cost — Included with Azure compute; no separate OS licensing fees or support contracts Microsoft-owned supply chain — From kernel to CVE response, enabling fast-track Critical/High CVE patches with monthly security updates Predictable lifecycle
[In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced package footprint and a security-first design. Key highlights: Azure-tuned kernel — Linux 6.18 LTS with improved Hyper-V integration, GPU/AI accelerator support, and new hardware drivers Secure by default — Secure Boot, Trusted Launch, SELinux support, kernel hardening, and SBOMs published with target SLSA Level 3 Minimal footprint — Ships only the packages required for cloud workloads, reducing attack surface from day one No additional OS licensing cost — Included with Azure compute; no separate OS licensing fees or support contracts Microsoft-owned supply chain — From kernel to CVE response, enabling fast-track Critical/High CVE patches with monthly security updates Predictable lifecycle
[In preview] Public preview: Azure Linux 4.0 for Azure Virtual Machines and VM Scale Sets Azure Linux 4.0, Microsoft's first-party Linux distribution purpose-built for Azure, is now available in public preview for Azure Virtual Machines and VM Scale Sets. It brings a modernized stack — including Linux kernel 6.18 LTS, dnf5 package manager, glibc 2.42, OpenSSL 3.5, and Python 3.14 — optimized for Azure compute, storage, and networking. It delivers faster VM startup and provisioning with a reduced package footprint and a security-first design. Key highlights: Azure-tuned kernel — Linux 6.18 LTS with improved Hyper-V integration, GPU/AI accelerator support, and new hardware drivers Secure by default — Secure Boot, Trusted Launch, SELinux support, kernel hardening, and SBOMs published with target SLSA Level 3 Minimal footprint — Ships only the packages required for cloud workloads, reducing attack surface from day one No additional OS licensing cost — Included with Azure compute; no separate OS licensing fees or support contracts Microsoft-owned supply chain — From kernel to CVE response, enabling fast-track Critical/High CVE patches with monthly security updates Predictable lifecycle