This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker sends specially crafted messages to a Microsoft Server Message Block 1.0 (SMBv1) server.
To learn more about the vulnerability, see Microsoft Security Bulletin MS17-010.
Important
This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Get security updates automatically.
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
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How to obtain help and support for this security update
Help for installing updates: Windows Update: FAQ
Security solutions for IT professionals: TechNet Security Support and Troubleshooting
Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure
Local support according to your country: International Support
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