Microsoft-windows-netfx3-ondemand-package.cab =link= Download

| 错误代码 | 错误原因 | 解决方案 | | :--- | :--- | :--- | | | 无法下载所需文件，但CAB源存在。 | 检查源路径是否完整；若网络受限，请配合 dism.exe /online /cleanup-image /restorehealth 命令修复系统映像。 | | 0x800F081F / 0x800F0907 | 源路径无效或文件版本不匹配。 | 使用 winver 检查系统版本，并从同版本的Windows ISO中提取最新且匹配的CAB文件。 | | 0x800F0922 | 磁盘空间不足或系统保留分区损坏。 | 清理C盘空间；或在CMD中运行 reagentc /info 检查Windows恢复环境（WinRE）配置是否正常。 | | 0x800F0954 | 组策略或注册表强制使用WSUS（企业常见）。 | 在“本地组策略编辑器”中设置“备用源文件路径”并启用“指定可选组件安装和组件修复的设置”。 |

dism /online /add-package /packagepath:D:\sources\sxs\microsoft-windows-netfx3-ondemand-package.cab

This means the DISM tool cannot find the source files. Ensure the .cab file name is correct and the path is accurate.

dism.exe /online /add-package /packagepath:C:\temp\microsoft-windows-netfx3-ondemand-package~31bf3856ad364e35~amd64~~.cab Use code with caution. Copied to clipboard

Once .NET 3.5 is installed, the .cab file is no longer needed for day-to-day operations. However, keep a backup on a network share or USB drive in case you need to repair the installation later. Microsoft-windows-netfx3-ondemand-package.cab Download

Once you have the file, follow these steps to install it using the Command Prompt. Prerequisites

The solution is to place a DesktopDeployment.cab file in the same directory as your Microsoft-Windows-NetFx3-OnDemand-Package.cab . You can find this supplementary file from older Windows 10 ISOs or from community resources like the obnoxAdmin/netfx3 GitHub repository.

建议您将对应版本的 CAB 文件保存在安全的 U 盘或网络共享中。这不仅能为您的系统运行旧款关键软件提供坚实基础，让您在无网环境下也能游刃有余，还能为同事或客户提供极大的便利。

DISM cannot find the installation source files at the path specified, or the version of the CAB file does not exactly match your installed Windows build version. | 错误代码 | 错误原因 | 解决方案 | |

While Windows can usually download these files automatically via Windows Update, certain environments—such as offline servers, restricted corporate networks, or PCs with corrupted update components—require a manual installation. The "OnDemand" package contains the necessary payload to enable the NetFX3 feature locally. Official Sources for Download

.NET Framework 3.5 is a critical runtime environment that many older and specialized applications require. However, starting with Windows 10, Microsoft no longer includes the installation source files for this framework directly in the operating system by default. This design change means that when you try to enable .NET Framework 3.5 through the standard "Windows Features" panel, the system must download the necessary files from Windows Update.

To fix this, you must bypass the internet entirely using the file. This specialized Cabinet (CAB) file acts as a standalone Feature-on-Demand (FOD) package for deploying .NET 3.5 completely offline. What is Microsoft-Windows-NetFx3-OnDemand-Package.cab?

The .cab package allows you to bypass Windows Update entirely and install the framework offline. Where to Get the CAB File safely Copied to clipboard Once

I can provide the exact DISM commands or Group Policy configurations tailored to your environment. Share public link

Once you have the .cab file, you cannot simply double-click it to install. You must use the tool via the command line. Method 1: Using the CAB file from a Folder

Contents and purpose

DISM /Online /Add-Package /PackagePath:"C:\netfx3\Microsoft-Windows-NetFx3-OnDemand-Package.cab" Use code with caution. Wait for the progress bar to reach 100%. Restart your computer if prompted. Alternative Installation: Using the ISO directly

dism /online /enable-feature /featurename:NetFx3 /all