⚠️ Action required: Microsoft's NuGet author-signing certificate changes starting Sept 23, 2026. If you allow-list Microsoft in trustedSigners or use dotnet nuget verify with fingerprints, add the new cert now to avoid NU3034 install failures. devblogs.microsoft.com/dotnet/micro...
Microsoft is updating its author-signing certificate starting September 23, 2026 - .NET Blog
Starting September 23, 2026, Microsoft is updating the author-signing certificate used for NuGet packages. Customers using trusted signer policies or certificate fingerprint verification should add th...
devblogs.microsoft.com