Microsoft is releasing KB5008878 for the .NET Framework 3.5 and 4.8 for the Windows 10 version 1809.

As part of today’s patch day of January 2022, in addition to the overall update KB5009557 for Windows 10 version 1809, Microsoft has also released a new update for Windows 10 version 1809 for .NET Framework 3.5 and 4.8. The January 11, 2022 update to KB5008878 for Windows 10 version 1809 and Windows Server version 1809 is an overall reliability improvement over the .NET Framework 3.5 and 4.8. This security update indicates a problem that an unauthorized attacker may have caused by a service denial attack on the infected computer. For more information, see CVE-2022-21911. It is recommended to use this update as part of routine maintenance routines. To download and install the update, go to Settings -> Update & Security -> Windows Update and select it. Looking for updates And Download and install now Out. The update can be downloaded from the Windows Update or Microsoft Update and Microsoft Update Catalog. More information about this update can be found below or through Microsoft.

Download -> Download the KB5008878 update for Windows 10

You can download KB5008878 for Windows 10 directly from Microsoft:

Additional information on KB5008878 for Windows 10 is available from Microsoft.

Via Update History of the .NET Framework