.NET Framework support for Azure Kubernetes Service (AKS)

[richlander]

.NET Framework container capabilities were significantly improved in 2021, adding support for process isolation. It is important to consider this capability in your AKS deployments.

Process isolation is the only supported Windows Container hosting model for AKS, per Best practices for Windows containers on AKS:

AKS uses Windows Server 2019 and Windows Server 2022 as the host OS versions and only supports process isolation.

Process isolation support is included in .NET Framework 4.8 and .NET Framework 4.8.1, supporting Windows Server 2019 and later. The changes are included in regular patch updates (no additional patches required). The changes are not available for Windows Server 2016.

We recommend that all .NET Framework container apps be built using a .NET Framework 4.8 or 4.8.1 base image on Windows Server 2019 or later.

References:

• Initial container patch
• .NET Framework 4.8.1 images announcement