.NET Source-Build 9.0.114 February 2026 Updates

[dotnet-sb-bot]

Source-build updates for the .NET / 9.0.114 February 2026 release.

[NikolaMilosavljevic]

@ellahathaway @mthalman do you know why this would fail in source-build?

/vmr/src/roslyn-analyzers/src/Tools/GenerateDocumentationAndConfigFilesForBrokenRuntime/GenerateDocumentationAndConfigFilesForBrokenRuntime.csproj(0,0): error NU1605: (NETCORE_ENGINEERING_TELEMETRY=Restore) Warning As Error: Detected package downgrade: System.Composition from 9.0.13 to 9.0.12. Reference the package directly from the project to select a different version. 
 GenerateDocumentationAndConfigFilesForBrokenRuntime -> Microsoft.CodeAnalysis 4.12.0-3.25609.5 -> System.Composition (>= 9.0.13) 
 GenerateDocumentationAndConfigFilesForBrokenRuntime -> System.Composition (>= 9.0.12)

We have PVP flow for System.Composition in both roslyn and roslyn-analyzers.

[ellahathaway]

@ellahathaway @mthalman do you know why this would fail in source-build?

/vmr/src/roslyn-analyzers/src/Tools/GenerateDocumentationAndConfigFilesForBrokenRuntime/GenerateDocumentationAndConfigFilesForBrokenRuntime.csproj(0,0): error NU1605: (NETCORE_ENGINEERING_TELEMETRY=Restore) Warning As Error: Detected package downgrade: System.Composition from 9.0.13 to 9.0.12. Reference the package directly from the project to select a different version. 
 GenerateDocumentationAndConfigFilesForBrokenRuntime -> Microsoft.CodeAnalysis 4.12.0-3.25609.5 -> System.Composition (>= 9.0.13) 
 GenerateDocumentationAndConfigFilesForBrokenRuntime -> System.Composition (>= 9.0.12)

We have PVP flow for System.Composition in both roslyn and roslyn-analyzers.

This is likely because we need the internal commits to be merged: #52946

[NikolaMilosavljevic]

@ellahathaway @mthalman do you know why this would fail in source-build?

/vmr/src/roslyn-analyzers/src/Tools/GenerateDocumentationAndConfigFilesForBrokenRuntime/GenerateDocumentationAndConfigFilesForBrokenRuntime.csproj(0,0): error NU1605: (NETCORE_ENGINEERING_TELEMETRY=Restore) Warning As Error: Detected package downgrade: System.Composition from 9.0.13 to 9.0.12. Reference the package directly from the project to select a different version. 
 GenerateDocumentationAndConfigFilesForBrokenRuntime -> Microsoft.CodeAnalysis 4.12.0-3.25609.5 -> System.Composition (>= 9.0.13) 
 GenerateDocumentationAndConfigFilesForBrokenRuntime -> System.Composition (>= 9.0.12)

We have PVP flow for System.Composition in both roslyn and roslyn-analyzers.

This is likely because we need the internal commits to be merged: #52946

Ah, right - I checked roslyn flow, but not SDK. Thanks.