The Windows Defender is the Microsoft security application that now offers detection capabilities on par with reputable third-party applications.
In the operating system Windows 10 το Windows Defender is the key part of Windows Security, a central security hub that includes additional tools such as firewall settings, parental controls, and more.
The Windows Defender In addition to scanning, real-time scanning, cloud analysis also has complete protection against ransomware, as it can detect and block any file changes to the system.
Updates featuring new virus samples are issued by Microsoft very regularly and should be applied immediately to any system, as they help identify new threats. This is something you should do for any security product, as updates that contain new virus samples help applications detect the latest threats and block them before they reach your data.
In Windows 10, his update Windows Defender can be done through Windows Update Because the antivirus is built into operating system of Microsoft. Therefore, from a technical point of view, all you need to do is follow the path below to check for updates on a device running Windows 10:
Settings - Update and Security - Windows Update - Check for updates
If there are updates Windows 10 will download them and install them automatically.
However, checking for updates with new virus samples does not always work properly, either because of errors or due to malware infections that prevent you from installing updates to prevent them from working.
So below we will see how you can update it Windows Defender from the command line utility, a method that is especially useful if Windows Update does not work manually.
Let's see how it is done:
In the search type cmd and the black command line icon will appear. Right-click the icon and select Run as Administrator.
In the window that will open, type the following command to check for new updates and download them if available:
"% ProgramFiles% \Windows Defender\ MpCmdRun.exe "-SignatureUpdate
If the command does not work, you will need to clear the definition cache on your device. For this case, you should use the following command:
"% ProgramFiles% \Windows Defender\ MpCmdRun.exe "-removedefinitions -dynamicsignatures
The above commands work in all versions of Windows 10, and do not require a reboot of your system.