Microsoft has released KB4522738, the cumulative update of the .NET Framework 3.5 and 4.8 for Windows 10 May 2019 Update (version 1903) and Windows Server 2019 (1903), which improves the quality and reliability of the platform
Microsoft has released the cumulative .NET Framework update KB4522738 for Windows 10 version 1903 (May 2019 Update) based on x64 processors (amd64), ARM64, and Windows Server 2019 (1903) for x64-based systems.
Installation through Windows Update
Cumulative Update 4522738 for PC installs through Windows Update. To check, go to the menu Options > Update and Security and press Check for Updates.
To complete the installation, you will need to restart your computer.
Install and configure Windows 10 updates
Download the update
You can also download the update from the Microsoft Update Catalog and install it manually from the link below:
To install the MSU file, just double-click on the file. You can apply additional parameters (for example, /silent for a background installation) – installing the MSU service pack.
Improvements and fixes to KB4522738
Details are available at support page.
You can download the file below:x64 download update
x86 download update
Windows Server 2019 download update