- .NET Framework 4.8 update not applicable https://support.microsoft.com/en-gb/topic/october-12-2021-kb5005539-cumulative-update-for-net-framework-3-5-and-4-8-for-windows-10-version-2004-windows-server-version-2004-windows-10-version-20h2-windows-server-version-20h2-and-windows-version-21h1-c4df5899-0296-4f65-aa44-4285141e46fe 4 comments sysadmin