November 2021 .NET Updates

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

.NET

* [.NET November 2021 Updates – 6.0](https://devblogs.microsoft.com/dotnet/announcing-net-6/)
* .NET 6.0.0 and .NET SDK 6.0.100 ([Release Notes](https://github.com/dotnet/core/blob/main/release-notes/6.0/6.0.0/6.0.0.md) | [Download](https://dotnet.microsoft.com/download/dotnet/6.0))
* [.NET November 2021 Updates – 5.0.12 and 3.1.21](https://devblogs.microsoft.com/dotnet/november-2021-updates/)
* .NET 5.0.12 and .NET SDK 5.0.403 and .NET SDK 5.0.209 ([Release Notes](https://github.com/dotnet/core/blob/main/release-notes/5.0/5.0.12/5.0.12.md) | [Download](https://dotnet.microsoft.com/download/dotnet/5.0))
* .NET Core 3.1.21 and .NET SDK 3.1.415 ([Release Notes](https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.21/3.1.21.md) | [Download](https://dotnet.microsoft.com/download/dotnet-core/3.1))

.NET Framework

* [.NET November 2021 Security and Quality Rollup](https://devblogs.microsoft.com/dotnet/net-framework-november-2021-cumulative-update/)
* [.NET Framework 4.8 Container Improvements (November 2021 Update)](https://github.com/microsoft/dotnet-framework-docker/issues/849)

.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)

Start with the November 2021 issue body and verify the linked .NET and .NET Framework release announcements, release notes, downloads, and support-policy documents. Done means the listed November releases and links are complete and accurate, including any additional releases that belong in the month.

Written by the indexing model from the issue text.