: Navigate to the following folder on the mounted drive: [Drive Letter]:\sources\sxs\
The CAB file is either for the wrong architecture (e.g., amd64 on x86) or language mismatch. Download Microsoft-windows-netfx3-ondemand-package.cab
The is a critical file required for the offline installation of .NET Framework 3.5 (which includes .NET 2.0 and 3.0) on Windows 10, 11, and Windows Server. This package is typically needed when the standard online installation via "Windows Features" fails with errors like 0x800f081f or when the system has no internet access. Where to Find the .cab File : Navigate to the following folder on the