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.NET Compilers Toolset Package. Referencing this package will cause the project to be built using the C# and Visual Basic compilers contained in the package, as opposed to the version installed with MSBuild. This package is primarily intended as a method for rapidly shipping hotfixes to customers. Using it as a long term solution for providing newer compilers on older MSBuild installations is explicitly not supported. That can and will break on a regular basis. The supported mechanism for providing new compilers in a build environment is updating to the newer .NET SDK or Visual Studio Build Tools SKU. This package requires either MSBuild 16.3 and .NET Desktop 4.7.2+ or .NET Core 2.1+ More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/35d9211b841e7613c1d2f8f5af6d628ace696c4c.
Latest stable
5.9.0
Last release 2 months ago
17 Aug 2026
Ships on a steady schedule
a new release about every 3 months
Rarely documented
notes for 4 of 32 stable releases
3 versions withdrawn
withdrawn after publishing
127 years old
51 releases · first in 1900
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This project publishes no release notes. Between v4.1.0 and v4.2.0 there were 250 commits, 163 of them substantive:
This project publishes no release notes. Between v4.1.0 and v4.2.0 there were 250 commits, 163 of them substantive:
ROSLYN_TEST_* in TestRunner (#60196)…and 143 more.
This project publishes no release notes. Between v4.0.1 and v4.1.0 there were 250 commits, 155 of them substantive:
This project publishes no release notes. Between v4.0.1 and v4.1.0 there were 250 commits, 155 of them substantive:
…and 135 more.
Release
This project publishes no release notes. Between v3.10.0 and v4.0.1 there were 250 commits, 158 of them substantive:
…and 138 more.
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This project publishes no release notes. Between v3.9.0 and v3.10.0 there were 250 commits, 154 of them substantive:
This project publishes no release notes. Between v3.9.0 and v3.10.0 there were 250 commits, 154 of them substantive:
…and 134 more.
Release
This project publishes no release notes. Between v3.8.0 and v3.9.0 there were 250 commits, 149 of them substantive:
…and 129 more.
Release Notes Install Instructions
This project publishes no release notes. Between v3.6.0 and v3.8.0 there were 250 commits, 140 of them substantive:
…and 120 more.
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Release Notes Install Instructions
This project publishes no release notes. Between version-3.2.0 and v3.6.0 there were 250 commits, 134 of them substantive:
…and 114 more.
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This project publishes no release notes. Between version-3.1.0 and version-3.2.0 there were 250 commits, 143 of them substantive:
This project publishes no release notes. Between version-3.1.0 and version-3.2.0 there were 250 commits, 143 of them substantive:
…and 123 more.
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