/enable-feature /featurename:NetFX3 : Tells Windows to enable the specific .NET Framework 3.5 feature.
Modern operating systems come pre-packaged with newer framework versions like .NET 4.8 or .NET 6.0/8.0. However, these newer versions are not natively backward-compatible with software built specifically for older environments.
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /Source:D:\sources\sxs /LimitAccess Use code with caution. Press .
If you try to use the standard installer and receive an error code like 0x800F0906 , it means Windows is struggling to find the source files offline. In this case, use Method 3 below, which uses a small utility to automate the offline installation process without needing a full Windows ISO. In this case, use Method 3 below, which
By utilizing built-in deployment tools and official Microsoft deployment assets, you avoid downloading risky, modified third-party executables.
If you do not have installation media, you can download the full redistributable package from a computer with internet and then move it to your offline PC.
Method 1: The Official Microsoft Dotnet Offline Installer (Recommended) Offline Installation via Command Line (Recommended)
for IT pros or anyone who frequently sets up older software on fresh Windows machines. The offline installer is a lifesaver when internet is slow or absent. Just be ready for a slightly technical install process.
Open and note the drive letter assigned to the Windows media (for example, Drive D: or E: ). Type cmd into the Windows search bar. Right-click Command Prompt and select Run as administrator .
: Use Method 1 described above. Ensure that the /LimitAccess switch is included in your command line, which forces Windows to look only at your offline source drive instead of trying to reach the internet. Error Code 0x800F0922 In this case
Paste the following command and press Enter: reg query "HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5" /v Version
Click . Windows will search for the files and activate the framework. Troubleshooting Common Installation Errors Error Code 0x800F0906
, which contains all necessary files for local installation. 2. Offline Installation via Command Line (Recommended)