To install this update, use one of the following release channels. This update is available through Windows Update. It will be downloaded and installed automatically. To get the standalone package for this update, go to the Microsoft Update Catalog website.

Use the System File Checker tool to repair missing or corrupted system files. When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether.

Wusa.exe calls the Windows Update Agent API to continue the installation. Then, Wusa.exe waits until the Windows Update wizard finishes the installation. To install an .msu update package, run Wusa.exe together with the full path of the file.

The installation file is typically named Autorun.exe or Setup.exe, but this may vary. If you're not sure, check the Readme file in the folder for instructions about how to run the installation process.

Troubleshoots and fixes common issues with security and malware prevention in Windows.

Learn how to optimize system performance by managing startup applications in Windows.

Learn how to uninstall a Windows update, if for example that update is causing your system to have errors or other problems.

After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, but we recommend moving to Windows 11. Learn more. Note: Use these steps for Windows programs.

Learn about the standard terminology that is used to describe Microsoft software updates.

Get Help has troubleshooters for Copilot you can run for many common scenarios. These often help resolve issues without the need to contact support. If a troubleshooter is available for your issue, select Start to run that troubleshooter.