September 8, 2020-KB4576484 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 1903, Windows Server 1903 RTM, Windows 10, version 1909 and Windows Server, version 1909

Release Date:
September 8, 2020

Version:
.NET Framework 3.5 and 4.8

Summary

ClickOnce will no longer download applications from untrusted servers which use NTLM authentication, but, instead, will fail with “Authentication failed”. Sites in the Local Intranet and Trusted sites zones will continue to authenticate as before.

Known issues in this update

Microsoft is not currently aware of any issues in this update.

How to get this update

Install this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

Yes

None. This update will be downloaded and installed automatically from Windows Update.

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Windows Server Update Services (WSUS)

Yes

This update will automatically sync with WSUS if you configure Products and Classifications as follows:

Product:Windows 10 Version 1903, Windows Server 1903 RTM, Windows 10, version 1909 and Windows Server, version 1909

Classification: Security Updates

File information

For a list of the files that are provided in this update, download the file information for cumulative update.

Information about protection and security

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