Click . If Windows cannot find the files locally, it will request an internet connection to pull them from Microsoft's servers. If you are entirely offline, this method will fail and prompt you to use Method 1. Troubleshooting Common Offline Installation Errors
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs
Look at the very top item: .
The target computer is completely offline or in a secure, isolated network environment.
A: Yes. The Windows 10 64-bit offline installer (via sxs folder) works perfectly on Windows 11. Net Framework 3.5 Offline Installer Windows 10 64 Bit
The installation files are located within the installation media. The path is typically: [Drive Letter]:\sources\sxs Inside this folder, a file named microsoft-windows-netfx3-ondemand-package.cab should exist. The DISM command does not require specifying the .cab file explicitly; pointing to the sxs folder is sufficient.
Once you have downloaded the offline installer, follow these steps to install .NET Framework 3.5: The Windows 10 64-bit offline installer (via sxs
Since Windows 10 64-bit already contains the necessary source files in its installation media, the best "offline installer" is actually your original Windows 10 ISO or USB drive. Method 1: Using the DISM Command (Recommended)