Usually means the source files are missing. Ensure your Dism command points to the exact /sources/sxs folder in the ISO.
Locate your Windows ISO file, right-click it, and select . Note the drive letter of the mounted drive (e.g., Step 2: Use DISM to Install Open Command Prompt or PowerShell as Administrator .
: Frequently, trying to install .NET 3.5 online throws stubborn error codes like 0x800F0906 , 0x800F0922 , or 0x800F081F . An offline installation bypasses the Windows Update servers entirely, clearing up these issues. Usually means the source files are missing
Note: The ISO is roughly 5–6 GB. You are not installing Windows; you are extracting a single folder from it.
Is the target machine (air-gapped)?
Method 2: Using the Offline Installer Tool (Direct Download)
This guide covers everything you need to know about downloading the offline installer and installing it without an active internet connection. Note the drive letter of the mounted drive (e
contains all the necessary files within a single package (usually an ISO file), allowing you to install the framework regardless of your internet status.
) due to connectivity issues, Windows Update policies, or restricted network environments. Note: The ISO is roughly 5–6 GB
Copy and paste the following command into the window. Replace X: with the actual drive letter of your mounted Windows ISO.