dotnetbinaries.blob.core.windows.net will be taken offline on 2025-06-10

[lbussell]

dotnetbinaries.blob.core.windows.net is a storage account hosting various .NET binaries that were used in .NET Framework container image builds. It will be decommissioned on 2025-06-10. Below is a summary of the resources hosted on dotnetbinaries along with instructions on how to obtain them from alternative sources.

Migration guidance

.NET Framework Reference Assemblies

Affected URLs:

• https://dotnetbinaries.blob.core.windows.net/referenceassemblies/v4.0.zip
• https://dotnetbinaries.blob.core.windows.net/referenceassemblies/v4.5.2.zip
• https://dotnetbinaries.blob.core.windows.net/referenceassemblies/v4.6.2.zip
• https://dotnetbinaries.blob.core.windows.net/referenceassemblies/v4.7.1.zip
• https://dotnetbinaries.blob.core.windows.net/referenceassemblies/v4.7.2.zip
• https://dotnetbinaries.blob.core.windows.net/referenceassemblies/v4.8.zip
• https://dotnetbinaries.blob.core.windows.net/referenceassemblies/v4.8.1.zip

Instead of using the above URLs, download .NET Framework reference assemblies from NuGet.org:

• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net40
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net45
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net451
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net452
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net46
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net461
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net462
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net47
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net471
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net472
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net48
• https://www.nuget.org/packages/Microsoft.NETFramework.ReferenceAssemblies.net481

To extract the reference assemblies from the NuGet packages, use the following NuGet CLI command:

nuget install Microsoft.NETFramework.ReferenceAssemblies.net472 -DirectDownload -ExcludeVersion -Version 1.0.3 -OutputDirectory .\Packages

Service Monitor

ServiceMonitor is a Windows executable designed to be used as the entrypoint process when running IIS inside a Windows Server container.

Affected URLs:

• https://dotnetbinaries.blob.core.windows.net/servicemonitor/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/1342334/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/2.0.1.1/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/2.0.1.2/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/2.0.1.3/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/2.0.1.4/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/2.0.1.5/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/2.0.1.6/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/2.0.1.8/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/2.0.1.9/ServiceMonitor.exe
• https://dotnetbinaries.blob.core.windows.net/servicemonitor/2.0.1.10/ServiceMonitor.exe

The latest ServiceMonitor release has been re-uploaded to GitHub and is available at the following URL:

• https://github.com/microsoft/IIS.ServiceMonitor/releases/download/v2.0.1.10/ServiceMonitor.exe

Any future releases will be posted on ServiceMonitor's GitHub Releases page.

.NET Framework 3.5 Installers

Affected URLs:

• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-ltsc2016.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-1709.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-1803.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-1809.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-1903.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-1909.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-2004.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-2009.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-20H2.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-ltsc2016.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-ltsc2019.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-ltsc2022.zip
• https://dotnetbinaries.blob.core.windows.net/dockerassets/microsoft-windows-netfx3-ltsc2025.zip

Instead of installing .NET Framework 3.5 using the above installers, you should instead Deploy .NET Framework 3.5 by using Deployment Image Servicing and Management (DISM).

For guidance specific to .NET Framework container images, please see How to install .NET Framework 3.5 on Windows Server Core container images.