How to Install .NET Framework 3.5 Offline on Windows 11 (Using ISO & DISM)

# ❓ Install .NET Framework 3.5 Offline on Windows 11/10 (Using DISM + ISO)

Many legacy apps on Windows 11 or 10 still require .NET Framework 3.5. If your machine cannot access the internet, you will see error code 0x800F081F when trying to install the .NET Framework 3.5 on a Windows computer. This video demonstrates a full offline method using a Windows 11 ISO installation image and the DISM command. So, can enable .NET 3.5 even in locked-down corporate or lab environments.
Starting with Windows 11 26H1 and later releases, .NET Framework 3.5 can only be installed using the standalone offline installer, DotNet35Setup.exe (https://go.microsoft.com/fwlink/?LinkID=2337635)

📖 𝗥𝗘𝗔𝗗 𝗧𝗛𝗘 𝗙𝗨𝗟𝗟 𝗔𝗥𝗧𝗜𝗖𝗟𝗘 📖
## ✅ How to Install .NET Framework 3.5 on Windows 10/11 and Windows Server
➤ 👉 https://woshub.com/how-to-install-net-framework-3-5-on-windows/

## ℹ️ Used commands:
🔹 Check if the .NET Framework 3.5 is installed on Windows:
_Get-WindowsCapability -Online -Name NetFx3_
🔹 Install the .NET Framework 3.5 feature on Windows 11 or 10 using PowerShell:
_Enable-WindowsOptionalFeature -Online -FeatureName "NetFx3"_

If the computer is not connected to the internet or is on an isolated network, the installation of .NET Framework 3.5 will fail with error code 0x8024402C.
🔹 To manually install the .NET Framework 3.5 components offline using the Windows installation image:
Mount the ISO image:
_Mount-DiskImage -ImagePath "C:\ISO\Windows11-25h2.iso"_
Add the .NET Framework 3.5 feature from the Windows installation image:
_DISM /online /enable-feature /featurename:NetFX3 /All /Source:E:\sources\sxs /LimitAccess_

Видео How to Install .NET Framework 3.5 Offline on Windows 11 (Using ISO & DISM) канала Windows OS Hub (woshub.com)