1. Windows Defender Definitions Manual Download
2. Windows Defender

Mar 15, 2019 Explains how to download the latest antimalware definition updates for Microsoft Forefront Client Security, Microsoft Forefront Endpoint Protection 2010 or Microsoft System Center 2012 Endpoint Protection without installing Microsoft Windows Server Update Services (WSUS).

• Jun 29, 2015  Hello, I'm using the 10122 build; I cannot proceed with further updates as the Windows Update tries to download the Defender update KB2267602 (definition 1.199.1271.0), but the download (apparently) is stopped at the 0%; this also prevents any additional update to be downloaded (also the new builds ones).
• Sep 25, 2019 Windows Defender Antivirus is a built-in antimalware solution that provides next generation protection for desktops, portable computers, and servers. Windows Defender Antivirus uses security intelligence to detect threats. Windows 10 will try to automatically download the most recent intelligence.
• Nov 24, 2019  Microsoft’s Windows Defender Antivirus is a free security application designed to protect Windows-based computers from malicious code. Featuring seamless integration with current versions of Windows and having a relatively simple interface, Windows Defender Antivirus can check the list of programs that are in use, launched at startup or trying to connect to the Internet.

This package will help you install the latest Windows Defender definition updates. Windows Defender is a free program that helps protect your computer against pop-ups, slow performance, and security threats caused by spyware and other unwanted software. It features Real-Time Protection, a monitoring system that recommends actions against spyware when it's detected and minimizes interruptions and helps you stay productive.

Windows Defender Definitions Manual Download

How to download and install a Microsoft Windows Defender update:

1. Check whether your version of Windows is 32-bit or 64-bit.
2. In the table left, click on the link that will work for your version of Windows.
3. Save the file to your Desktop.
4. When the file has finished downloading, go to your Desktop and double-click the file dowloaded (it will be called win10-mpam-fe-x64.exe, win10-mpam-fe-x86.exe or similar).
5. Follow the prompts to install the update.

• 2408 votes
  Provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.

  • Freeware
  • Windows
• 152 votes
  Free program that protects your computer against pop-ups, slow performance and security threats.

  • Freeware
  • Windows XP/Vista/7
• 388 votes
  Provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.

  • Freeware
  • Windows

Windows Defender Antivirus is an antimalware solution that provides security and virus protection. Every Azure Stack infrastructure component (Hyper-V hosts and virtual machines) is protected with Windows Defender Antivirus. For up-to-date protection, you need periodic updates to Windows Defender Antivirus definitions, engine, and platform. How updates are applied depends on your configuration.

Connected scenario

The Azure Stack Hub update resource provider downloads antimalware definitions and engine updates multiple times per day. Each Azure Stack infrastructure component gets the update from the update resource provider and applies the update automatically.

For those Azure Stack Hub deployments that are connected to the public Internet, apply the monthly Azure Stack update. The monthly Azure Stack Hub update includes Windows Defender Antivirus platform updates for the month.

Disconnected scenario

For those Azure Stack Hub deployments that are not connected to the public Internet (e.g. air-gapped data centers), starting with the 1910 release, customers have the ability to apply the antimalware definitions and engine updates as they are published.

To apply the updates to your Azure Stack Hub solution, you first have to download them from the Microsoft site (links below) and subsequently, import them into a storage blob container under your updateadminaccount. A scheduled task scans the blob container every 30 minutes and, if new Defender definitions and engine updates are found, it applies them to the Azure Stack Hub infrastructure.

For those disconnected deployments that are not yet on 1910 or later, or that don't have the ability to download Defender definitions and engine updates on a daily basis, the monthly Azure Stack Hub update includes Windows Defender Antivirus definitions, engine, and platform updates for the month.

Set up Windows Defender for manual updates

With the 1910 release, two new cmdlets were added to the privileged endpoint to configure Windows Defender manual update in Azure Stack Hub.

The following procedure shows how to setup Windows Defender manual update.

1. Connect to the privileged endpoint and run the following cmdlet to specify the name of the storage blob container where the Defender updates will be uploaded.

   Note

   The manual update process described below only works in disconnected environments where access to 'go.microsoft.com' is not allowed. Trying to run the cmdlet Set-AzsDefenderManualUpdate in connected environments will result in an error.

2. Download the two Windows Defender update packages and save them on a location that is reachable from your Azure Stack Hub administration portal.

   • mpam-fe.exe from https://go.microsoft.com/fwlink/?LinkId=121721&arch=x64
   • nis_full.exe from https://go.microsoft.com/fwlink/?LinkId=197094

   Note

   You'll have to download these two files every time you want to update the Defender signatures.

3. In the administration portal, select All services. Then, under the DATA + STORAGE category, select Storage accounts. (Or, in the filter box, start typing storage accounts, and select it.)

4. In the filter box, type update, and select the updateadminaccount storage account.

5. In the storage account details, under Services, select Blobs.

6. Under Blob service, select + Container to create a container. Enter the name that was specified with the Set-AzsDefenderManualUpdate (in this example defenderupdates) and then select OK.

7. After the container is created, click the container name, and then click Upload to upload the package files to the container.

8. Under Upload blob, click the folder icon, browse to the Windows Defender update mpam-fe.exe files and then click Open in the file explorer window.

9. Under Upload blob, click Upload.

10. Repeat steps 8 and 9 for the nis_full.exe file.

Windows Defender

A scheduled task scans the blob container every 30 minutes and applies any new Windows Defender package.

Next steps