Download Net Framework 35 Offline Installer For Windows 10 11 Free //top\\ -

Restart if prompted.

Type the following command into the Command Prompt window and press :

.NET Framework各个主要版本（1.x/2.x/3.x 与 4.x/5/6/7/8）是可以在系统中 的。旧应用程序在编写时直接调用了旧框架（2.0或3.5）的特定API，这些API在新框架中可能已被弃用或修改。因此，为了兼容老旧的业务系统，系统需要单独保留这份18年的“老将”，直到其在2029年1月9日正式终止官方支持。 Restart if prompted

Method 1: The Official Microsoft .NET Framework 3.5 Runtime Installer

| Issue | Solution | |-------|----------| | “Source files not found” | Your Windows media must match the installed on your PC. Download the correct ISO from Microsoft using the Media Creation Tool. | | Error 0x800F0954 | Group Policy is blocking the install. Use Method 2 with local media. | | “DISM error 0x800f081f” | The sxs folder path is wrong. Browse to D:\sources\sxs manually to ensure it exists. | | | Error 0x800F0954 | Group Policy is blocking the install

Right-click the executable on your offline PC and select to begin the localized extraction and setup process.

| File | Source | Size | |------|--------|------| | dotnetfx35.exe | Microsoft Download Center | ~231 MB | | Windows 10/11 ISO (optional) | Microsoft Media Creation Tool | ~5 GB | Browse to D:\sources\sxs manually to ensure it exists

Method 2: Using the .NET 3.5 Feature Installer (Third-Party, Highly Recommended)

Dism /online /enable-feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess Use code with caution. Press . Step 3: Verify the Installation