.NET Framework 4.8.1 will be available for the following versions of Windows and distribution channels:
Windows Update: Windows 11 21H2, Windows 10 21H2 (LTSC), and Windows 10 22H2
Microsoft Update Catalog: Windows 11 21H2, Windows
10 21H2 (LTSC), Windows 10 22H2 and Windows Server 2022 (Desktop, Azure
Editions), Azure Stack 21H2 and Azure Stack 22H2.