Microsoft-windows-netfx3-ondemand-package.cab -extra |link|
The story of Microsoft-windows-netfx3-ondemand-package.cab is a classic tale of modern software meeting legacy requirements. It centers on the "Extra" hurdles administrators face when trying to revive .NET Framework 3.5
: The file is usually named microsoft-windows-netfx3-ondemand-package~31bf3856ad364e35~amd64~~.cab for 64-bit systems.
By default, Windows keeps the payload for optional features (like .NET 3.5) off your local drive. When you go to "Turn Windows features on or off" and check the box for .NET 3.5, your computer attempts to contact Windows Update to download the necessary files.
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. Microsoft-windows-netfx3-ondemand-package.cab -Extra
A more significant "extra" file has emerged in recent Windows builds, starting with Windows 11 version 24H2. Users attempting an offline installation of .NET Framework 3.5 found that the command would fail with the error 0x800f081f - CBS_E_SOURCE_MISSING . The solution was to place an file called DesktopDeployment.cab right alongside the Microsoft-Windows-NetFx3-OnDemand-Package.cab in the sxs folder. For a successful installation, both files must be present, making DesktopDeployment.cab a necessary 'extra' companion for modern Windows versions.
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Cannot install/update .net 3.5 for Windows 10 - Microsoft Q&A The story of Microsoft-windows-netfx3-ondemand-package
dism /online /enable-feature /featurename:NetFx3 /all /source:E:\sources\sxs /limitaccess
Many secure workstations lack internet access; this file allows for local installation without connecting to Microsoft's servers .
Many enterprise applications, older games, and specialized software require .NET Framework 3.5. Windows 10/11 comes with .NET 4.x by default, which is not backward-compatible with 3.5. Offline Installation: When you go to "Turn Windows features on
After the progress bar reaches 100%, verify that the feature is successfully enabled by running: dism /online /get-features /format:table | findstr "NetFx3" Use code with caution. Troubleshooting Common Errors Error: 0x800f0906 or 0x800f081f
By following the steps above, you will convert a two-hour troubleshooting nightmare into a 30-second command-line victory. Legacy software doesn’t have to be a headache—you just need the right CAB.
This two-step process first adds the package to the system's side-by-side store, then enables the feature itself.
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs
Inside this folder, you will find a file named: microsoft-windows-netfx3-ondemand-package~31bf3856ad364e35~amd64~~.cab