Error 0x80070490 Solved! Update Now with KB5021288

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KB5021288 Summary: Fixes Error Code 0x80070490 and More Issues

KB5021288 is an update released by Microsoft to address various issues and improve stability and performance in Windows operating systems. This cumulative update includes improvements and fixes for features such as Windows Update, Windows Store, and system reliability. It is designed for the latest version of Windows 10 (version 21H2) and should be applied to ensure your system runs smoothly without encountering known issues that have been reported by users.

KB5021288 addresses several bugs affecting various parts of the operating system, including but not limited to:

  • Patch for a security vulnerability in Windows Update
  • Fixes for compatibility issues with certain third-party applications and hardware devices
  • Improvements to network connectivity and stability
  • Updates to improve performance and reliability of Windows Store app installations

This update also includes non-security related quality improvements, such as:

  • Bug fixes for Windows Explorer to address issues with file and folder access
  • Fixes for problems encountered when using Remote Desktop Services
  • Updates to improve the performance of system processes during startup and shutdown

To install KB5021288 manually, follow these detailed steps:

  • Open Settings from the Start menu.
  • Navigate to Update & Security.
  • Select Windows Update on the left panel.
  • Click Check for updates in the right pane.
  • If there are any available updates, install them by clicking Install now or Download and notify me when an update is ready (recommended).
  • After installation completes, restart your computer to apply all changes.
  • To verify that KB5021288 has been installed:
    1. Open Control Panel.
    2. Select System and Security.
    3. Navigate to Windows Update under Administrative Tools.
    4. Click View update history. Check for an entry related to KB5021288.

    KB5021288 Description: Addresses Security Vulnerabilities and Resolves Error Code 0x80070490

    KB5021288 resolves several critical issues that were affecting the stability, security, and performance of Windows 10 (version 21H2). Specifically, this update addresses:

    • A security vulnerability in the Windows Update component that could allow an attacker to elevate their privileges.
    • Compatibility problems with certain software applications and hardware devices, leading to crashes or improper functionality.
    • Bugs related to network connectivity, such as intermittent internet connection drops and difficulties establishing connections with remote servers.

    This update also includes fixes for the following issues:

    • A problem in Windows Explorer that caused delays when accessing certain file types or folders.
    • Issues encountered during Remote Desktop Services sessions where users experienced lag or disconnects.
    • Bugs affecting system reliability, such as frequent blue screen errors and application crashes due to unhandled exceptions.

    The cumulative nature of KB5021288 means it also includes all previous updates released for Windows 10 (version 21H2) up until the release date of this update. Therefore, applying this update ensures your system is fully patched against known vulnerabilities and bugs while providing a better user experience through enhanced performance and stability.

    Howto install KB5021288

    1. To initiate an automatic search for updates:
    2. Click on Start.
    3. Select Settings (the gear icon).
    4. In the settings window, go to Update & Security.
    5. Choose Windows Update from the left pane.
    6. Press Check for updates in the right pane and wait until the process is complete.

    If KB5021288 appears as an available update, proceed with installation:

  • Navigate back to the list of updates if any are available.
  • Select Download and notify me when an update is ready (recommended).
  • After downloading, click Install now to start the installation process.
  • Restart your computer once the installation completes.

    • To install KB5021288 manually:

  • Navigate to Microsoft Update Catalog online.
  • Type “KB5021288” in the search bar and click Search.
  • Select the appropriate package (for 64-bit or 32-bit systems) and download it.
  • Run the downloaded .exe file, follow on-screen instructions to install KB5021288.

    • Note: Always ensure you have a backup before applying any major system updates.

    Similar questions

    What are the new features introduced in update KB5021288?
    How can I check if my system has already been updated to KB5021288?
    Is there a rollback option available if issues arise after installing KB5021288?
    Will KB5021288 affect the performance of my computer or its stability?
    Can you provide details on any security improvements in update KB5021288?
    Does update KB5021288 require a restart to apply the changes fully?
    What are some common issues users have faced after installing KB5021288?
    Is there documentation or support available for troubleshooting problems related to KB5021288?
    How can I opt out of downloading and installing update KB5021288 automatically?
    Does KB5021288 impact the functionality of any specific software applications that I use frequently?

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