Windows 10: Bought new computer with windows 11. Does Defender operate once I turn it on or do I need...

Bought New Windows 11-installed computer. Do I need to download Defender or does it function as soon as I begin using computer.

:)

 

Turning Off Windows Defender Notifications in Windows 10

Steps to Disable Windows Defender

• Go to Run.
• Type in ‘gpedit.msc’ (without quotes) and hit Enter. This will open up a new menu, where group policy editor options are listed.
• Head to the ‘Administrative Templates’ tab, located under ‘Computer Configuration’.
• Click ‘Windows Components’, followed by ‘Windows Defender’.
• Find the ‘Turn off Windows Defender’ option, and double-click it.
• Click "Enabled and then OK.
• Exit GPE menu.

 

WINDOWS DEFENDER is turned off

Hi Ahmed,

Since you're not able to turn on Windows Defender as well, we'd like to know if you have made any changes recently prior to this issue. In the meantime, you may follow the steps below on how to turn on Windows Defender manually:

• Type Windows Defender in the Search bar and press
  Enter.
  
• Go to Settings and make sure that the Turn on real-time protection recommended option is turned on.
  

Same thing with the other members who are having the same issue, we suggest that you check if the service was setup to
Automatic in the Services option. Please follow the steps that we've provided last
September 3, 2017.

Let us know how if you were able to turn it on properly by changing the Startup type to Automatic.

 

New Event Details in "Windows Defender > Operational" Log (Event Viewer)

Hi JJJ Ham,

The events you've observed in the Windows Defender Operational log are likely part of the normal initialization and updating processes of Windows Defender, now known as Microsoft Defender Antivirus. Here's an explanation of each event:

1. Event on November 29th - "Initialize Misc Config Library" to "PostPlatformUpdate": This event corresponds with a Windows Defender update. The change from the "Old value" to the "New value" suggests a transition in the initialization stage of Defender components. "Initialize Misc Config Library" likely refers to setting up various configuration settings, while "PostPlatformUpdate" indicates that this stage is completed following an update to the Defender platform.
   
2. Subsequent Events - "PostPlatformUpdate" to "Service Started Successfully": These events show a sequential process in which Windows Defender progresses through different initialization stages. "Loading Engine" likely refers to the loading of the core antivirus engine, a critical part of Defender's functionality. The final message, "Service Started Successfully," confirms that the Defender service has successfully started and is operational.
   

These types of events are normal for the operation and updating of Microsoft Defender Antivirus. The reason you started noticing these events from the 29th could be due to a particular update or a change in the logging behavior of Windows Defender. It's common for software updates to adjust or enhance how they log events.

The absence of these events on your Windows 11 system might be due to different logging methods in Windows 10 and Windows 11, or it could be because Windows Defender operates differently when another antivirus software is in use. The registry keys related to these logs might also vary or be used differently in Windows 11.

In conclusion, the events you've noticed are a standard part of Windows Defender's operation and not a cause for concern, especially since they align with an update process. The variation in logs between Windows 10 and Windows 11 could be attributed to differences in the operating system versions or configurations.

Regards，

Manson |Microsoft Community Support Specialist