Net 3.5 online from Microsoft servers and ignore local WSUS: If you can access the Internet from your Windows Server host, but it is configured to receive updates from WSUS, you will see error 0x800f081f when installing NET Framework. Change the registry parameter to 0 or remove it to connect directly to the Microsoft Windows Update servers. In this case, you will receive error 0x800F0954 when installing. If the parameter value is 1, then your host is configured to receive Windows updates from the local WSUS server. Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" -Name "UseWUServer" | select -ExpandProperty UseWUServer For this installation method to work, you need to check the following:Ĭheck the value of the UseWUServer parameter in the registry:
NET 3.5 installation files for your Windows Server version will be downloaded from the Windows Update servers.
Net 3.5 from the component source files on the installation disk, use the command:ĭISM /online /enable-feature /featurename:NetFX3 /All /Source:E:\sources\sxs /LimitAccessĪdd-WindowsCapability -Online -Name NetFx3~~~~ -Source E:\Sources\SxS In my case, the virtual drive with the image was assigned the drive letter E: (we will use this drive letter in the following commands).Click on the file and choose Mount to connect the image to a virtual DVD drive (or use the PowerShell command: Mount-DiskImage -ImagePath "C:\ISO\Windows11-22h2.iso" ) In my case, I have the file Windows 11 ISO image file. Connect your media with the Windows installation image to your computer.To do this, you will need an installation USB flash drive or an ISO image file with your Windows version ( how to check the version of Windows in an ISO image): In this case, you can manually install the NET 3.5 feature from your Windows installation media. Please reboot your computer and try again
NET 3.5: Windows couldn’t complete the requested changes. If your computer is not connected to the Internet or disconnected from the network, then an error will appear when installing. Or with PowerShell: Enable-WindowsOptionalFeature -Online -FeatureName "NetFx3".Using DISM: DISM /online /Enable-Feature /FeatureName:"NetFx3".