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  1. support.microsoft.com

    The Microsoft Defender app also signs you in without requiring you to launch it, if Microsoft Defender Antivirus is your primary antivirus. Learn more about how the Microsoft account or work or school account you use to sign-in to Windows can be used to sign in to other apps on your device at aka.ms/sso-info. To prevent SSO, sign-out or ...
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  3. learn.microsoft.com

    Jan 10, 2025Make sure to get your antivirus and antimalware updates, even if Microsoft Defender Antivirus is running in passive mode. See Manage Microsoft Defender Antivirus updates and apply baselines. Passive mode is only supported on Windows Server 2012 R2 & 2016 when the machine is onboarded using the modern, unified solution.
  4. support.microsoft.com

    One of the key benefits of the Windows Security app is its ability to provide real-time protection. Microsoft Defender Antivirus continuously scans your device for potential threats and takes immediate action to neutralize them. This proactive approach helps to prevent malware infections and keeps your device running smoothly.
  5. learn.microsoft.com

    Microsoft Defender Antivirus reverts back to the last known-good engine and a platform update will be attempted. Current Platform Version: Current platform version; Event ID 2006. ... a 2010 event is reported. However, when the dynamic signature expires or is manually deleted a 2011 event is reported. In some cases, when a new signature is ...
  6. en.wikipedia.org

    Microsoft Defender Antivirus (formerly Windows Defender) is an antivirus software component of Microsoft Windows.It was first released as a downloadable free anti-spyware program for Windows XP and was shipped with Windows Vista and Windows 7.It has evolved into a full antivirus program, replacing Microsoft Security Essentials in Windows 8 or later versions.
  7. microsoft.com

    Microsoft Defender Antivirus. A next-generation protection solution that comes with Windows 11, Microsoft Defender Antivirus is real-time, always-on antivirus protection. Microsoft Defender SmartScreen. If a website, application, or download is potentially malicious and could harm your computer, SmartScreen will warn you. ...
  8. learn.microsoft.com

    May 2, 2024Microsoft Defender Antivirus is built into Windows, and it works with Microsoft Defender for Endpoint to provide protection on your device and in the cloud. Tip As a companion to this article, see our Security Analyzer setup guide to review best practices and learn to fortify defenses, improve compliance, and navigate the cybersecurity ...
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