KB4520146 Summary: Fixes for Windows Update Error 80072EFD
KB4520146 updates Windows 10 to address known issues, security vulnerabilities, and improve overall system stability. This cumulative update includes improvements for Microsoft Edge, Internet Explorer, and various other components of the Windows operating system. It is recommended for users who want to protect their systems against potential threats and benefit from performance enhancements.
This update also contains updates for .NET Framework 3.5, 4.7.2, 4.8, and later versions if installed on a supported system architecture, as well as address several bugs related to Windows Update, Windows Defender, and Cortana functionalities. Additionally, the cumulative update ensures compatibility with the latest web standards and security protocols.
This release is part of Microsoft’s regular monthly updates cycle aimed at providing ongoing support for Windows 10 users. It includes security patches from previous months that were not included in earlier releases, along with additional fixes to improve user experience and system performance.
The update KB4520146 addresses several key issues affecting stability, compatibility, and security within the Windows 10 environment. Among these are critical vulnerabilities in Internet Explorer, Edge browser, and various core Windows components that could potentially be exploited by attackers if left unpatched.
KB4520146 Description: Addresses Patching Issues Caused by Error 80072EFD in Windows Updates
KB4520146 resolves a variety of bugs impacting system performance, user interface elements like Start menu and taskbar functions, and stability issues with the Windows Update service itself. Specifically, this update includes fixes for:
- Problems related to Windows Update failing to install updates due to corrupt or missing files.
- Issues causing Cortana to crash frequently or fail to start.
- Bugs leading to unexpected behavior when using the Start menu and taskbar features in various applications.
- Vulnerabilities allowing remote code execution if a user visits a specially crafted website with Internet Explorer.
This update also enhances the .NET Framework by fixing issues such as incorrect application behavior or crashes, ensuring smoother interaction between Windows 10 systems and modern web technologies.
Howto install KB4520146
- Navigate to Microsoft’s official website for downloading the update.
- Select “Update now” if prompted, or manually download KB4520146 from the Microsoft Update Catalog (search by keyword).
- Save the downloaded file to your local drive and extract any compressed content as necessary.
- Open Command Prompt with administrative privileges. To do this, right-click on Start menu and select “Command Prompt (Admin)” or run it through Windows PowerShell with admin rights.
- Navigate to the directory containing the downloaded update files using the
cdcommand in Command Prompt. - Type the following command to install the update:
wusa filename.msu /quiet
Replace ‘filename’ with the actual name of the .msu file you have on your computer. The ‘/quiet’ switch enables a silent installation mode.
- Wait for the installation process to complete. This may take several minutes depending upon the size and complexity of the update.
- Once installed, reboot your system once to finalize the changes made by KB4520146.
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