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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.
Microsoft is not currently aware of any issues in 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 .
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