Type the following command, replacing E: with the drive letter of your mounted ISO/USB drive: dism /online /enable-feature /featurename:NetFx3 /all /source:E:\sources\sxs /limitaccess
The same method applies to Windows 11 64-bit. Use a Windows 11 ISO’s sxs folder.
What are you trying to get running?
For IT administrators managing multiple machines without access to deployment servers, community-created portable scripts or utilities can automate the process described in Method 1.
Windows 10 usually prompts you to download .NET 3.5 via Windows Update the moment an older application requests it. However, the online method fails in several scenarios:
Dism /online /enable-feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess Use code with caution. Understanding the Command Switches: