Method B: If you copied the CAB file to a specific local folder
Name your file install_netfx3.bat and save it to the same directory where your .cab file resides (e.g., C:\netfx3 ).
DISM is the cleanest command-line tool built into Windows for servicing system images. Microsoft-windows-netfx3-ondemand-package.cab Download
To help me tailor any troubleshooting steps, please tell me:
If you do not have your ISO, you can download a fresh, authentic copy directly from Microsoft: Navigate to the official Microsoft Windows Download Portal. Method B: If you copied the CAB file
Using the official Microsoft-Windows-NetFx3-OnDemand-Package.cab file bypasses Windows Update entirely, allowing for a successful offline installation. Where to Safely Download the CAB File
To avoid security risks, malware, or corrupted system files, Using the official Microsoft-Windows-NetFx3-OnDemand-Package
Dism /online /enable-feature /featurename:NetFx3 /All /Source:C:\netfx3\microsoft-windows-netfx3-ondemand-package.cab /LimitAccess Use code with caution. Parameter Breakdown: /online : Targets your currently running operating system.