Net 3.5 Offline Installer — No Password

Dism /online /enable-feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess Use code with caution.

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Note: In modern versions of Windows 10 and 11, this executable may still attempt to trigger a Windows Update download. If it fails, use Method 1 or Method 3. Method 3: Using Third-Party Offline Installer Tools net 3.5 offline installer