February 2021 .NET Updates

The following .NET updates were released in February 2021. This issue will be updated if there are any additional releases during the month.

.NET

* [.NET February 2021 Updates – 5.0.3, 3.1.12, 2.1.25](https://devblogs.microsoft.com/dotnet/net-february-2021/)
* .NET 5.0.3 and .NET SDK 5.0.103 ([Release Notes](https://github.com/dotnet/core/blob/master/release-notes/5.0/5.0.3/5.0.3.md) | [Download](https://dotnet.microsoft.com/download/dotnet/5.0))
* .NET Core 3.1.12 and .NET SDK 3.1.112 ([Release Notes](https://github.com/dotnet/core/blob/master/release-notes/3.1/3.1.12/3.1.12.md) | [Download](https://dotnet.microsoft.com/download/dotnet-core/3.1))
* .NET Core 2.1.25 and .NET SDK 2.1.521 ([Release Notes](https://github.com/dotnet/core/blob/master/release-notes/2.1/2.1.25/2.1.25.md) | [Download](https://dotnet.microsoft.com/download/dotnet-core/2.1))

.NET Framework

* [February 2021 Security and Quality Rollup](https://devblogs.microsoft.com/dotnet/net-framework-february-security-and-quality-rollup/)
* [February 2021 Cumulative Update Preview](https://devblogs.microsoft.com/dotnet/net-framework-february-2021-cumulative-update-preview-for-net-framework/)
* [February 2021 Cumulative Update Preview for Windows 10 2004 and newer versions](https://devblogs.microsoft.com/dotnet/net-framework-february-2021-cumulative-update-preview-for-windows-10-2004-windows-server-version-2004-windows-10-version-20h2-and-windows-server-version-20h2/)

.NET Support Policies

Microsoft support policies are defined in the following documents:

* [Microsoft .NET Support Policy](https://dotnet.microsoft.com/platform/support/policy/)
* [.NET Core OS Lifecycle Policy](https://github.com/dotnet/core/blob/master/os-lifecycle-policy.md)