July 30, 2018 - KB4346877 (OS Build 14393.2396)

Applies to: Windows 10, version 1607Windows Server 2016

Information and fixes


This update addresses an issue that was introduced in the July 2018 .NET Framework update. Applications that rely on COM components were failing to load or run correctly because of “access denied,” “class not registered,” or “internal failure occurred for unknown reasons” errors.

For more information about this issue, see the following article in the Microsoft Knowledge Base:

4345913 "Access Denied" errors and applications with COM activation fail after installing July 2018 Security and Quality Rollup updates for .NET Framework

Knows issues in this update


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

How to get this update


To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Prerequisite: The servicing stack update (SSU) (KB4132216) must be installed before installing the latest cumulative update (LCU) (KB4346877). The LCU will not be reported as applicable until the SSU is installed.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4346877.