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It was first released as a downloadable free anti-spyware program for Windows XP , and was later shipped with Windows Vista and Windows 7. It has evolved into a full antivirus program, replacing Microsoft Security Essentials , as part of Windows 8 and later versions.
Before Windows 8, Windows Defender only protected users against spyware. It also has the ability to remove installed ActiveX software. It also uses the same anti-malware engine and virus definitions from MSE. In the Windows 10 Anniversary Update , a new logo is introduced and a pop-up notification will appear to announce the results of a scan, even if no viruses are found.
At the RSA Security conference, Bill Gates , the Chief Software Architect and co-founder of Microsoft, announced that Microsoft AntiSpyware would be made available free-of-charge to users with validly licensed Windows , Windows XP , and Windows Server operating systems to secure their systems against the increasing malware threat.
It featured the program's new name and a redesigned user interface. Also, since Beta 2, the program works as a Windows service, unlike earlier releases, which enables the application to protect the system even when a user is not logged on. On October 23, , Microsoft released the final version of Windows Defender.
Windows Defender was released with Windows Vista and Windows 7, serving as their built-in anti-spyware component. In Windows Vista and Windows 7, Windows Defender was superseded by Microsoft Security Essentials , an antivirus product from Microsoft which provided protection against a wider range of malware.
In Windows 8, Microsoft upgraded Windows Defender into an antivirus program very similar to Microsoft Security Essentials for Windows 7 [3] and using the same virus definition updates.
Microsoft Security Essentials itself does not run on Windows versions beyond 7. It switches itself off upon installation of a third-party anti-virus package. Starting with Windows 10, Microsoft began to transfer the control of Windows Defender out of its original user interface. Initially, its "Settings" dialog box was replaced by a dedicated page in the Settings app.
In the Windows Defender options, the user can configure real-time protection options. Windows 10's Anniversary Update introduced Limited Periodic Scanning, which optionally allows Windows Defender to scan a system periodically if another antivirus app is installed.
Integration with Internet Explorer and Microsoft Edge enables files to be scanned as they are downloaded to detect malicious software inadvertently downloaded.
A feature released in early , Windows Defender Application Guard is a feature exclusive to Microsoft Edge that allows users to sandbox their current browsing session from the system. This prevents a malicious website or malware from affecting the system and the browser. Application Guard is a feature only available on Windows 10 Pro and Enterprise. The extension, once installed, will open the current tabs web page in Microsoft Edge with Application Guard enabled.
Controlled Folder Access is a feature introduced with Windows 10 Fall Creators Update to protect a user's important files from the growing threat of ransomware. This feature was released about a year later after the Petya family of ransomware first appeared. The feature will notify the user every time a program tries to access these folders and will be blocked unless given access via the user. Windows will warn the user with a User Account Control popup as a final warning if they opt to "Allow" a program to read Controlled Folders.
Windows Defender had additional functionality in Windows Vista which was removed in subsequent versions of Windows: [37]. The Advanced Tools section allows users to discover potential vulnerabilities with a series of Software Explorers. They provide views of startup programs, currently running software, network connected applications, and Winsock providers Winsock LSPs. The first and last categories carry a link to learn more about the particular item, and the second category invites users to submit the program to Microsoft SpyNet for analysis by community members.
Windows Defender in Windows Vista automatically blocks all startup items that require administrator privileges to run this is considered suspicious behavior for a startup item.
This automatic blocking is related to the User Account Control functionality in Windows Vista, and requires users to manually run each of these startup items each time they log in if they desire the item to run at startup. In Windows Vista, it is possible to close the window and have the program run in the system tray while a scan is running.
However, in Windows 7, this functionality was removed and the window must remain open while a scan is running. Windows Defender Offline formerly known as Standalone System Sweeper [42] is a stand-alone anti-malware program that runs from bootable removable media e. CD or USB flash drive designed to scan infected systems while the Windows operating system is offline. By May 8, , Microsoft had released a patch to all affected systems.
Ars Technica commended Microsoft for its unprecedented patching speed and said that the disaster had been averted. On December 1, , AV-TEST gave Defender a maximum protection score of 34 points after successfully managing to detect ten out of ten ransomware samples in a lab test. From Wikipedia, the free encyclopedia. Anti-malware software. Retrieved 10 February Download Center. Archived from the original on 29 April Archived from the original on 19 December Retrieved 4 March Retrieved 17 March Retrieved 13 June Retrieved 31 December Retrieved 27 March December Archived from the original on 30 December Retrieved 21 December SuperSite for Windows.
Archived from the original on 5 August Archived from the original on 17 June Archived from the original on 6 June A lot!!
Announcing Windows Defender! Archived from the original on 23 November Archived from the original on 24 November Archived from the original on 7 January Microsoft Corporation.
Archived from the original on 30 January Archived from the original on 18 January Archived from the original on 30 October Archived from the original on 18 November Microsoft Answers. Retrieved 19 December Introducing Windows 8. Microsoft Press published 15 October ISBN Archived from the original on 2 June Archived from the original on 3 August Archived from the original on 27 April Retrieved 5 March Archived from the original on 5 March There appears to be no way to access the "classic UI" in Since the new Windows 10 Update , this no longer works.
In previous versions a link to [ September Archived from the original on 11 November Windows Experience Blog. Archived from the original on 26 July June Archived from the original on 30 June November Retrieved 12 April Archived from the original on 14 October Retrieved 26 April CBS Interactive.
Retrieved 9 May Supersite for Windows. Archived from the original on 1 July Archived from the original on 7 April Retrieved 16 April Ars Technica.
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