System administrators use this file to "sideload" the framework onto corporate machines using DISM (Deployment Image Servicing and Management). Installation via Command Line
It resolves the common Error 0x800F0906 or 0x800F081F , which occurs when Windows cannot find the source files to enable the feature.
: If you mount a Windows ISO, the file is typically located in the \sources\sxs directory. Microsoft-windows-netfx3-ondemand-package.cab -Extra
dism /online /add-package /packagepath:"D:\sources\sxs\microsoft-windows-netfx3-ondemand-package.cab"
: This might be a specific (though non-standard) switch you've seen used with a deployment tool like DISM (Deployment Image Servicing and Management) or a custom script to trigger additional logging or verbose output during the .NET 3.5 installation. System administrators use this file to "sideload" the
| Error Code | Meaning | Likely Cause | Primary Fix | | :--- | :--- | :--- | :--- | | | DISM failed to find source files. | The path to the .cab file is incorrect, the file is inaccessible, or the /LimitAccess parameter is missing. | Double-check the path for typos. Ensure the file is not on a disconnected network drive. Remove /LimitAccess temporarily as a test to see if Windows can find the files via other means. | | 0x800f081f / 0x800f0906 | The source files could not be found. | This almost always means the .cab file you are using does not match the version of your Windows operating system. For example, using a Windows 10 cab on Windows 11. | Obtain the correct .cab file from an official Windows ISO that matches your exact OS build and version. | | 0x80070003 | ERROR_PATH_NOT_FOUND | The system cannot find the path specified. | This is the telltale error on Windows 11 24H2 when DesktopDeployment.cab is missing alongside the main .cab file. | Locate the DesktopDeployment.cab file (e.g., from an older ISO or a community repository) and place it in the same sxs source folder as the main .cab file. | | 0x80070490 | ERROR_NOT_FOUND | DISM cannot find the feature you're trying to enable. | The command syntax might be incorrect, or the feature name is wrong. | Re-enter the command, ensuring the /FeatureName:NetFx3 is spelled correctly. | | Access Denied | Permission Issue | The command prompt or PowerShell session was not started with administrative privileges. | Right-click on Command Prompt or PowerShell and select Run as administrator . |
A critical distinction is that the standard dotnetfx35.exe installer, which works perfectly on Windows 7 and XP, . Double-clicking dotnetfx35.exe on these modern operating systems will trigger an online download, which is precisely what we want to avoid in an offline scenario. The CAB file is the correct, dedicated offline installer for these OS versions. | Double-check the path for typos
—is the physical payload for this feature. The "Extra" part of your query usually refers to the specific command-line arguments or "extra" troubleshooting steps required when the standard "Turn Windows features on or off" menu fails. The Plot Twist: Error 0x800F0954
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Sometimes, DISM refuses to work due to a corrupted servicing stack. In these deep-corruption cases, you must go "Extra" – manually extract the CAB and place files.
Here is the standard command: