No. dotnetfx35.exe is the web installer (requires internet). The .cab is an offline, OS-specific component.
In domain environments, Group Policy may disable Windows features. Check: Computer Configuration\Administrative Templates\System\Specify settings for optional component installation and component repair → Set to “Enabled” and provide a network source. Download Microsoft-windows-netfx3-ondemand-package.cab
Complete.
Never download CAB files from third-party or "DLL download" websites. These are frequently bundled with malware, rootkits, or modified system files that can compromise your entire operating system. In domain environments, Group Policy may disable Windows
: Only download .cab files from trusted Microsoft Learn pages or official installation media. Never download CAB files from third-party or "DLL
: Right-click the downloaded ISO and select Mount . Note the drive letter assigned (e.g., D: ).
This time, the file screamed down the pipe. 10MB/s. 20MB/s. The .cab file was specific, a precise surgical instrument extracted from the larger ISO by a script he’d written years ago. He wasn't downloading the whole disc; he was sniping the target.