The new .NET Framework 4.8.1 is available for Release Preview Insiders for Windows 11, version 21H2 (original release), Windows 10, version 21H2 (LTSC), and Windows 10, version 22H2.

Microsoft has detailed how it plans to deliver .NET Framework version 4.8.1 updates via Windows Update channel and Microsoft Update Catalog on older Windows 11 and Windows 10 versions.

Microsoft today announced that multiple .NET Framework versions signed using the legacy and insecure Secure Hash Algorithm 1 (SHA-1) will reach end of support next year.

Microsoft has reminded customers that multiple .NET Framework versions signed using the insecure Secure Hash Algorithm 1 (SHA-1) will reach their end of life this month.