You should see State : Enabled .
Enable-WindowsOptionalFeature -Online -FeatureName "NetFx3" -All -LimitAccess -Source "C:\temp"
DISM /Online /Add-Package /PackagePath:"C:\Temp\Microsoft-Windows-NetFx3-OnDemand-Package.cab"
Remember:
(replace C:\path\to\file with the actual folder location): dism.exe /online /add-package /packagepath:"C:\path\to\file\microsoft-windows-netfx3-ondemand-package.cab" 🌐 Alternative Installation Methods
If another PC on your network already has .NET 3.5 installed, you can copy the CAB from C:\Windows\WinSxS\ – but this is advanced.
If you don’t have an ISO, you can create one using the from Microsoft’s website — just ensure you match your current Windows build. Microsoft-windows-netfx3-ondemand-package.cab Download
Not necessary, but you can disable it via Turn Windows features on or off → uncheck .NET Framework 3.5 .
DISM is the cleanest command-line tool built into Windows for servicing system images.
If you're seeing a specific (like 0x800F081F ) while trying to install this, let me know—I can help you troubleshoot it! Install .NET Framework 3.5 on Windows 10 - Microsoft Learn You should see State : Enabled
Even with the correct .cab file, you may encounter errors. Here are the most frequent issues and their solutions.
If you have the Windows ISO mounted (let’s assume it's drive ), you don't need to copy the file. You can install .NET 3.5 directly using this command:
Before manually hunting for the .cab file, you can use the Deployment Image Servicing and Management (DISM) tool. This command forces Windows to download the official package straight from Microsoft's servers. Not necessary, but you can disable it via
You inadvertently booted into Windows Recovery Environment (WinRE) or used the wrong DISM environment. Solution: Boot normally into Windows, then run the command. If you are in WinRE, mount your OS partition first or use the Windows installation media directly.