Fix for Windows Update Error 80070490
KB4521863 is an update rollup for Microsoft Windows that addresses several security and non-security issues. It includes improvements to the stability, reliability, and compatibility of Windows with other software applications and hardware devices. The update helps protect against vulnerabilities in various components like Internet Explorer, EdgeHTML, Script Engine, and Windows DNS Server, ensuring a more secure environment for users. This cumulative update is part of the monthly rollup cycle designed to enhance system performance and security across different versions of Windows 10.
The release also includes fixes for reported issues impacting the functionality of certain features within the operating system, such as Windows Update, Cortana, and other system services. It aims at resolving problems related to user experience, application compatibility, and ensuring that Windows continues to operate smoothly with updates from Microsoft.
KB4521863 Updates to Resolve Error 80070490
Microsoft Security Bulletin MS19-056 addresses multiple vulnerabilities in the following products: Internet Explorer, Script Engine (JScript and VBScript), EdgeHTML component of Microsoft Edge, and Windows DNS Server. These security improvements aim at protecting against remote code execution and denial-of-service attacks that could be exploited if users visit malicious websites or open specially crafted files. Additionally, this update resolves several non-security issues affecting various areas such as the printing subsystem, networking components, shell features, and user interface elements like Start menu and Action Center notifications.
For specific vulnerabilities fixed in KB4521863, please refer to the official Microsoft Security Update Guide for detailed descriptions of each issue covered by this update rollup. These include mitigations, workarounds, and recommendations from Microsoft on how best to apply the update without disrupting system operations.
Howto install KB4521863
- Before installing KB4521863, ensure your Windows 10 installation is up-to-date with previous updates.
- To install via Windows Update: Click Settings, then go to Update & Security. Under the Windows Update tab, click Check for updates.
- Select the available update and follow on-screen instructions to download and install.
- If prompted during installation, restart your computer as required by Windows Update.
- To manually download KB4521863: Visit Microsoft’s Update Catalog (https://www.catalog.update.microsoft.com/).
- In the search bar, enter “KB4521863” and press Enter.
- Select the applicable Windows version from results.
- Click Download, then follow instructions for installing after download completes.
Similar questions
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