I have tried running Add-WindowsFeature powershell using the source but all attempts end up with 'The source files could not be found. How to FIX: Windows Defender Feature Installation Failed – 0x800f081f on Server 2016. Education Details: Checked for the KB article mentioned in the logs KB4503267 on the server, but it was not installed Checked the Microsoft Update Catalog but standalone package wasn’t available for download Checked the location C:\Windows\servicing\Packages, the package was not. Step 4: In Windows Feature window, make sure. Also, wasn't sure where t put this so I just went with the General Forum! I have an installation of Server 2016 Data Center on a VM. Work productively: Whether online or locally installed

Place the Windows Server 2016 installation Media on the server. Fix-2 Install the Optional Feature with Windows MCT-If you are facing the problem with installing the feature from Control Panel directly you can do it using Windows PowerShell, where you have to download the Windows 10 ISO using Media Creation Tool (MCT).Windows server 2016 feature install error 0x800f0831 We may see that there is no NT SERVICE\ALL SERVICES in this policy.