To install .NET Framework 3.5 on , you typically need the microsoft-windows-netfx3-ondemand-package.cab file found on the original installation media. This file is not available as a direct standalone download from Microsoft; it is part of the "Payload" (Side-by-Side) folder on the OS disk. How to Obtain and Use the .cab File
By default, Windows Server 2012 R2 does not include the .NET Framework 3.0. If you try to install an application that requires the .NET Framework 3.0, you may encounter an error message indicating that the .NET Framework 3.0 is not installed. Windows Server 2012 R2 To install
| Error Code | Meaning | Solution | |------------|---------|----------| | 0x800f081f | Source files not found | Ensure the folder path is correct and the CAB is not nested in subfolders. Use dir C:\Temp\NetFX3\*.cab to confirm. | | 0x800f0906 | Cannot download from Windows Update | Add /LimitAccess to your DISM command to force it to use only the local CAB. | | 0x800f0922 | Feature installation failed after reboot | Check Group Policy: Computer Config → Admin Templates → System → "Specify settings for optional component installation". Set to "Enabled" with alternate source. | | 0x80070005 | Access denied | Re-run PowerShell/CMD as Administrator. | | 0x800f0831 | CBS corruption | Run sfc /scannow and dism /online /cleanup-image /restorehealth first. | Copy the contents of the installation media’s sources\sxs
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /Source:\\fileserver\sources\sxs /LimitAccess
DISM works even if the GUI "Add Roles" wizard fails. DISM works even if the GUI "Add Roles" wizard fails
On the page, click the link "Specify an alternate source path" at the bottom.
To install .NET Framework 3.5 on , you typically need the microsoft-windows-netfx3-ondemand-package.cab file found on the original installation media. This file is not available as a direct standalone download from Microsoft; it is part of the "Payload" (Side-by-Side) folder on the OS disk. How to Obtain and Use the .cab File
By default, Windows Server 2012 R2 does not include the .NET Framework 3.0. If you try to install an application that requires the .NET Framework 3.0, you may encounter an error message indicating that the .NET Framework 3.0 is not installed.
| Error Code | Meaning | Solution | |------------|---------|----------| | 0x800f081f | Source files not found | Ensure the folder path is correct and the CAB is not nested in subfolders. Use dir C:\Temp\NetFX3\*.cab to confirm. | | 0x800f0906 | Cannot download from Windows Update | Add /LimitAccess to your DISM command to force it to use only the local CAB. | | 0x800f0922 | Feature installation failed after reboot | Check Group Policy: Computer Config → Admin Templates → System → "Specify settings for optional component installation". Set to "Enabled" with alternate source. | | 0x80070005 | Access denied | Re-run PowerShell/CMD as Administrator. | | 0x800f0831 | CBS corruption | Run sfc /scannow and dism /online /cleanup-image /restorehealth first. |
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /Source:\\fileserver\sources\sxs /LimitAccess
DISM works even if the GUI "Add Roles" wizard fails.
On the page, click the link "Specify an alternate source path" at the bottom.