Microsoft Defender Antivirus. Formerly known as Windows Defender, Microsoft Defender Antivirus still delivers the comprehensive, ongoing, and real-time protection you expect against software threats like viruses, malware, and spyware across email, apps, the cloud, and the web. Security intelligence updates. Microsoft Defender Antivirus uses cloud-delivered protection (also called the Microsoft Advanced Protection Service or MAPS) and periodically downloads security intelligence updates to provide protection. The cloud-delivered protection is always on and requires an active connection to the Internet to function, while the security intelligence updates occur on a. Sep 03, 2020. Aug 03, 2020.
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Important
Welcome to Microsoft Defender for Endpoint, the new name for Microsoft Defender Advanced Threat Protection. Read more about this and other updates here. We'll be updating names in products and in the docs in the near future.
Applies to:
There are two types of updates related to keeping Microsoft Defender Antivirus up to date:
- Security intelligence updates
- Product updates
Important
Keeping Microsoft Defender Antivirus up to date is critical to assure your devices have the latest technology and features needed to protect against new malware and attack techniques.
This also applies to devices where Microsoft Defender Antivirus is running in passive mode.
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You can use the below URL to find out what are the current versions:https://www.microsoft.com/security/encyclopedia/adlpackages.aspx?action=info
Security intelligence updates
Microsoft Defender Antivirus uses cloud-delivered protection (also called the Microsoft Advanced Protection Service or MAPS) and periodically downloads security intelligence updates to provide protection.
Note
Updates are released under the below KB numbers:
Microsoft Defender Antivirus: KB2267602
System Center Endpoint Protection: KB2461484
Cloud-delivered protection is always on and requires an active connection to the Internet to function. Security intelligence updates occur on a scheduled cadence (configurable via policy). For more information, see Use Microsoft cloud-provided protection in Microsoft Defender Antivirus.
Engine updates are included with security intelligence updates and are released on a monthly cadence.
Product updates
Microsoft Defender Antivirus requires monthly updates (KB4052623) (known as platform updates), and will receive major feature updates alongside Windows 10 releases.
You can manage the distribution of updates through one of the following methods:
- The usual method you use to deploy Microsoft and Windows updates to endpoints in your network.
For more information, see Manage the sources for Microsoft Defender Antivirus protection updates.
Note
We release these monthly updates in phases. This results in multiple packages visible in your WSUS server.
Monthly platform and engine versions
For information how to update or how to install the platform update, see Update for Windows Defender antimalware platform.
All our updates contain:
- performance improvements
- serviceability improvements
- integration improvements (Cloud, Microsoft 365 Defender)
Security intelligence update version: 1.325.10.0
Released: October 01, 2020
Platform: 4.18.2009.7
Engine: 1.1.17500.4
Support phase: Security and Critical Updates
What's new
- Admin permissions are required to restore files in quarantine
- XML formatted events are now supported
- CSP support for ignoring exclusion merge
- New management interfaces for:
- UDP Inspection
- Network Protection on Server 2019
- IP Address exclusions for Network Protection
- Improved visibility into TPM measurements
- Improved Office VBA module scanning
Known Issues
No known issues
Security intelligence update version: 1.323.9.0
Released: August 27, 2020
Platform: 4.18.2008.9
Engine: 1.1.17400.5
Support phase: Security and Critical Updates
What's new
- Add more telemetry events
- Improved scan event telemetry
- Improved behavior monitoring for memory scans
- Improved macro streams scanning
- Added
AMRunningMode
to Get-MpComputerStatus PowerShell cmdlet - DisableAntiSpyware is ignored. Microsoft Defender Antivirus automatically turns itself off when it detects another antivirus program.
Known Issues
No known issues
Security intelligence update version: 1.321.30.0
Released: July 28, 2020
Platform: 4.18.2007.8
Engine: 1.1.17300.4
Support phase: Security and Critical Updates
What's new
- Improved telemetry for BITS
- Improved Authenticode code signing certificate validation
Known Issues
No known issues
Security intelligence update version: 1.319.20.0
Released: June 22, 2020
Platform: 4.18.2006.10
Engine: 1.1.17200.2
Support phase: Technical upgrade Support (Only)
What's new
- Possibility to specify the location of the support logs
- Skipping aggressive catchup scan in Passive mode.
- Allow Defender to update on metered connections
- Fixed performance tuning when caching is disabled
- Fixed registry query
- Fixed scantime randomization in ADMX
Known Issues
No known issues
Security intelligence update version: 1.317.20.0
Released: May 26, 2020
Platform: 4.18.2005.4
Engine: 1.1.17100.2
Support phase: Technical upgrade Support (Only)
What's new
- Improved logging for scan events
- Improved user mode crash handling.
- Added event tracing for Tamper protection
- Fixed AMSI Sample submission
- Fixed AMSI Cloud blocking
- Fixed Security update install log
Known Issues
No known issues
Security intelligence update version: 1.315.12.0
Released: April 30, 2020
Platform: 4.18.2004.6
Engine: 1.1.17000.2
Support phase: Technical upgrade Support (Only)
What's new
- WDfilter improvements
- Add more actionable event data to attack surface reduction detection events
- Fixed version information in diagnostic data and WMI
- Fixed incorrect platform version in UI after platform update
- Dynamic URL intel for Fileless threat protection
- UEFI scan capability
- Extend logging for updates
Known Issues
No known issues
Security intelligence update version: 1.313.8.0
Released: March 24, 2020
Platform: 4.18.2003.8
Engine: 1.1.16900.4
Support phase: Technical upgrade Support (Only)
What's new
- CPU Throttling option added to MpCmdRun
- Improve diagnostic capability
- reduce Security intelligence timeout (5 min)
- Extend AMSI engine internal log capability
- Improve notification for process blocking
Known Issues
[Fixed] Microsoft Defender Antivirus is skipping files when running a scan.
February-2020 (Platform: - | Engine: 1.1.16800.2)
Security intelligence update version: 1.311.4.0
Released: February 25, 2020
Platform/Client: -
Engine: 1.1.16800.2
Support phase: N/A
What's new
Known Issues
Windows Defender Antivirus Download Free
No known issues
Security intelligence update version: 1.309.32.0
Released: January 30, 2020
Platform/Client: 4.18.2001.10
Engine: 1.1.16700.2
Support phase: Technical upgrade Support (Only)
What's new
- Fixed BSOD on WS2016 with Exchange
- Support platform updates when TMP is redirected to network path
- Platform and engine versions are added to WDSI
- extend Emergency signature update to passive mode
- Fix 4.18.1911.3 hang
Known Issues
[Fixed] devices utilizing modern standby mode may experience a hang with the Windows Defender filter driver that results in a gap of protection. Affected machines appear to the customer as having not updated to the latest antimalware platform.
Important
This updates is needed by RS1 devices running lower version of the platform to support SHA2.
This update has reboot flag for systems that are experiencing the hang issue.
the This update is re-released in April 2020 and will not be superseded by newer updates to keep future availability.
Important
Download Windows Defender Win 10
This update is categorized as an 'update' due to its reboot requirement and will only be offered with a Windows Update
Security intelligence update version: 1.307.13.0
Released: December 7, 2019
Platform: 4.18.1911.3
Engine: 1.1.17000.7
Support phase: No support
What's new
- Fixed MpCmdRun tracing level
- Fixed WDFilter version info
- Improve notifications (PUA)
- add MRT logs to support files
Known Issues
When this update is installed, the device needs the jump package 4.10.2001.10 to be able to update to the latest platform version.
Microsoft Defender Antivirus platform support
Platform and engine updates are provided on a monthly cadence. To be fully supported, keep current with the latest platform updates. Our support structure is dynamic, evolving into two phases depending on the availability of the latest platform version:
Windows Defender Antivirus Download For Windows 10
Security and Critical Updates servicing phase - When running the latest platform version, you will be eligible to receive both Security and Critical updates to the anti-malware platform.
Technical Support (Only) phase - After a new platform version is released, support for older versions (N-2) will reduce to technical support only. Platform versions older than N-2 will no longer be supported.*
* Technical support will continue to be provided for upgrades from the Windows 10 release version (see Platform version included with Windows 10 releases) to the latest platform version.
During the technical support (only) phase, commercially reasonable support incidents will be provided through Microsoft Customer Service & Support and Microsoft's managed support offerings (such as Premier Support). If a support incident requires escalation to development for further guidance, requires a non-security update, or requires a security update, customers will be asked to upgrade to the latest platform version or an intermediate update (*).
Platform version included with Windows 10 releases
The below table provides the Microsoft Defender Antivirus platform and engine versions that are shipped with the latest Windows 10 releases:
Windows 10 release | Platform version | Engine version | Support phase |
---|---|---|---|
2004 (20H1) | 4.18.2004.6 | 1.1.17000.2 | Technical upgrade Support (Only) |
1909 (19H2) | 4.18.1902.5 | 1.1.16700.3 | Technical upgrade Support (Only) |
1903 (19H1) | 4.18.1902.5 | 1.1.15600.4 | Technical upgrade Support (Only) |
1809 (RS5) | 4.18.1807.18075 | 1.1.15000.2 | Technical upgrade Support (Only) |
1803 (RS4) | 4.13.17134.1 | 1.1.14600.4 | Technical upgrade Support (Only) |
1709 (RS3) | 4.12.16299.15 | 1.1.14104.0 | Technical upgrade Support (Only) |
1703 (RS2) | 4.11.15603.2 | 1.1.13504.0 | Technical upgrade Support (Only) |
1607 (RS1) | 4.10.14393.3683 | 1.1.12805.0 | Technical upgrade Support (Only) |
Windows 10 release info: Windows lifecycle fact sheet.
See also
![Defender Defender](https://www.filehippofile.com/wp-content/uploads/2018/10/Windows-Defender.jpg)
Article | Description |
---|---|
Manage how protection updates are downloaded and applied | Protection updates can be delivered through a number of sources. |
Manage when protection updates should be downloaded and applied | You can schedule when protection updates should be downloaded. |
Manage updates for endpoints that are out of date | If an endpoint misses an update or scheduled scan, you can force an update or scan at the next logon. |
Manage event-based forced updates | You can set protection updates to be downloaded at startup or after certain cloud-delivered protection events. |
Manage updates for mobile devices and virtual machines (VMs) | You can specify settings, such as whether updates should occur on battery power, that are especially useful for mobile devices and virtual machines. |
Microsoft Defender Offline is a powerful offline scanning tool that runs from a trusted environment, without starting your operating system. This topic describes how to use Microsoft Defender Offline in Windows 10, Windows 8.1, and Windows 7.
When should I use Microsoft Defender Offline?
Run Microsoft Defender Offline if:
Windows Security (named Windows Defender Security Center in previous versions of Windows) detects rootkits or other highly persistent malware on your PC and alerts you to use Microsoft Defender Offline. You might see a message stating that malware was found on your device, or receive a message in Windows Security notifying you that additional cleaning is required.
You suspect your PC might have malware that's hiding on it, but your security software doesn't detect anything. In this situation, you can start a Microsoft Defender Offline scan from Windows Security settings. Here's how:
Select Start , and then select Settings > Update & Security > Windows Security > Virus & threat protection .
On the Virus & threat protection screen, do one of the following:
In an up-to-date version of Windows 10: Under Current threats, select Scan options.
In previous versions of Windows: Under Threat history, select Run a new advanced scan.
Select Microsoft Defender Offline scan, and then select Scan now.
Windows Defender Download Windows 8
You'll be prompted that you're about to be signed out of Windows. After you are, your PC should restart. Microsoft Defender Offline will load and perform a quick scan of your PC in the recovery environment. When the scan has finished (usually takes about 15 minutes), your PC will automatically restart.
Notes:
Before you use Microsoft Defender Offline, make sure you save any open files and close all apps and programs.
You typically need administrator rights on the PC on which you plan to run Microsoft Defender Offline.
If you experience a Stop error on a blue screen when you run the offline scan, force a restart and try running a Microsoft Defender Offline scan again. If the blue-screen error happens again, contact Microsoft Support.
Where can I find scan results?
![Windows10 Windows10](https://www.tenforums.com/attachments/antivirus-firewalls-system-security/276112d1587787954t-how-stop-windows-defender-antivirus-service-clip_675.jpg)
Article | Description |
---|---|
Manage how protection updates are downloaded and applied | Protection updates can be delivered through a number of sources. |
Manage when protection updates should be downloaded and applied | You can schedule when protection updates should be downloaded. |
Manage updates for endpoints that are out of date | If an endpoint misses an update or scheduled scan, you can force an update or scan at the next logon. |
Manage event-based forced updates | You can set protection updates to be downloaded at startup or after certain cloud-delivered protection events. |
Manage updates for mobile devices and virtual machines (VMs) | You can specify settings, such as whether updates should occur on battery power, that are especially useful for mobile devices and virtual machines. |
Microsoft Defender Offline is a powerful offline scanning tool that runs from a trusted environment, without starting your operating system. This topic describes how to use Microsoft Defender Offline in Windows 10, Windows 8.1, and Windows 7.
When should I use Microsoft Defender Offline?
Run Microsoft Defender Offline if:
Windows Security (named Windows Defender Security Center in previous versions of Windows) detects rootkits or other highly persistent malware on your PC and alerts you to use Microsoft Defender Offline. You might see a message stating that malware was found on your device, or receive a message in Windows Security notifying you that additional cleaning is required.
You suspect your PC might have malware that's hiding on it, but your security software doesn't detect anything. In this situation, you can start a Microsoft Defender Offline scan from Windows Security settings. Here's how:
Select Start , and then select Settings > Update & Security > Windows Security > Virus & threat protection .
On the Virus & threat protection screen, do one of the following:
In an up-to-date version of Windows 10: Under Current threats, select Scan options.
In previous versions of Windows: Under Threat history, select Run a new advanced scan.
Select Microsoft Defender Offline scan, and then select Scan now.
Windows Defender Download Windows 8
You'll be prompted that you're about to be signed out of Windows. After you are, your PC should restart. Microsoft Defender Offline will load and perform a quick scan of your PC in the recovery environment. When the scan has finished (usually takes about 15 minutes), your PC will automatically restart.
Notes:
Before you use Microsoft Defender Offline, make sure you save any open files and close all apps and programs.
You typically need administrator rights on the PC on which you plan to run Microsoft Defender Offline.
If you experience a Stop error on a blue screen when you run the offline scan, force a restart and try running a Microsoft Defender Offline scan again. If the blue-screen error happens again, contact Microsoft Support.
Where can I find scan results?
To see the Microsoft Defender Offline scan results:
Select Start , and then select Settings > Update & Security > Windows Security > Virus & threat protection .
On the Virus & threat protection screen in Windows 10, under Current threats, select Scan options, and then select Protection history (In previous versions of Windows it may say Threat history).
Windows Defender Antivirus Download Latest
Using Windows Defender Offline on Windows 7 and Windows 8.1
Note: On older versions of Windows, Microsoft Defender Offline is still called by its old name: Windows Defender Offline
If you're running Windows Defender Offline on Windows 7 or Windows 8.1, follow these four basic steps:
Download Windows Defender Offline and install it to a CD, DVD, or USB flash drive.
Restart your PC using the Windows Defender Offline media. This means having the CD, DVD, or flash drive you created in step 1 inserted in the PC when you restart it. Follow the prompts to boot from the drive containing this media.
Scan your PC for viruses and other malware.
Remove any malware that's found from your PC.
Windows Defender Offline will walk you through these four steps when you're using the tool. If you've been prompted in Microsoft Security Essentials or Windows Defender Security Center to download and run Windows Defender Offline, it's important to do so. Doing this helps make sure that your data and PC aren't compromised.
To get started, find a blank CD, DVD, or USB flash drive with at least 250 MB of free space, and then download and run the tool. You'll be guided through the steps to create the removable media.
Note: We recommend that you download Windows Defender Offline and create the CD, DVD, or USB flash drive on a PC that isn't infected with malware—the malware can interfere with the media creation.
If you're not sure which version to download, see Is my PC running the 32-bit or 64-bit version of Windows?