.NET support for Windows 7 and 8.1 will end in January 2023
Windows 7 and Windows 8.1 are currently supported with .NET 6. They will not be supported with .NET 7+.
Windows 7 is only supported (with .NET 6) for organizations that have purchased Extended Security Updates (ESU). Windows 7 will be supported for those organizations until the ESU offering ends, which is January, 2023. At that time, Windows 7 will no longer be supported with .NET 6.
Windows 8.1 is supported until January 2023. At that time, Windows 8.1 will no longer be supported with .NET 6.