For systems without internet access, such as those behind a restrictive firewall or in secure corporate environments (WSUS), you must manually provide the CAB files from the original Windows installation media. Where to Find the CAB File
You need the installation media corresponding to your specific Windows version (e.g., Windows 10/11 installation ISO).
: Copy the cab file to a simple location on your system drive, such as C:\Windows or C:\Temp . For clarity, rename it to netfx3.cab if the original name is too long.
This guide explains how to locate, use, and deploy the .NET 3.5 CAB file to enable the feature offline. What is the .NET 3.5 CAB File? cab file for .net framework 3.5
Error codes, log files ( C:\Windows\Logs\DISM\dism.log ), bypassing WSUS using HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate\AU\UseWUServer .
Press Windows Key + R , type , and press Enter. Locate .NET Framework 3.5 (includes .NET 2.0 and 3.0) . Check the box and click OK . Reboot your computer if prompted. Verifying the Installation
Complete Guide to Using the CAB File for .NET Framework 3.5 The is the essential package required for offline installation on modern Windows systems, including Windows 10 and 11 . While newer versions of the framework are pre-installed, many legacy applications still rely on the 3.5 version (which includes .NET 2.0 and 3.0) to function correctly. What is the .NET Framework 3.5 CAB File? For systems without internet access, such as those
Installing can be a headache, especially when Windows Update fails or you’re working on an offline machine. The most reliable "pro" method is using the CAB file (the cabinet file containing the framework payload) and the Deployment Image Servicing and Management ( DISM ) tool. Where to Find the CAB File
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: Run the following command, replacing D: with the drive letter of your mounted ISO or the location of your CAB file: For clarity, rename it to netfx3
Get-WindowsOptionalFeature -Online -FeatureName NetFx3
CAB files for .NET Framework 3.5 can be downloaded from various sources, including:
Open .
Download or transfer the appropriate .cab file to your local drive (e.g., C:\cab\microsoft-windows-netfx3-ondemand-package~31bf3856ad364e35~amd64~~.cab ).
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs Use code with caution. Copied to clipboard /Online : Targets the operating system currently running.