You receive errors like "The following feature couldn't be installed: .NET Framework 3.5 (includes .NET 2.0 and 3.0)" (Error code 0x800F081F).
The .NET Framework 3.5 is essential for running many older, legacy desktop applications on modern operating systems. While Windows 10 and Windows 11 come pre-installed with newer versions like .NET Framework 4.8, they do not enable version 3.5 by default.
掌握 .NET Framework 3.5 的离线安装技巧对于Windows系统维护者来说是一项必备技能。鉴于该框架即将在未来版本的操作系统中逐步转为独立部署模式，提前熟悉独立的CAB包安装方法显得尤为重要。 You receive errors like "The following feature couldn't
How to Download and Install .NET Framework 3.5 Offline Installer for Windows 10 and 11
These errors indicate that Windows cannot find the source files to read from. 掌握
reg query "HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5" /v Version Use code with caution.
/Source:X:\sources\sxs : Directs the system to pull the installation data directly from your local ISO file instead of the internet. Fixes stubborn deployment issues where Windows Update fails
Fixes stubborn deployment issues where Windows Update fails to fetch the payload files.
After installation, test it by pressing Win + R , typing regedit , and navigating to:
Visit the official Microsoft Download Center for the .NET Framework 3.5 SP1 Full Package. Download the .exe file. Run the installer on your offline machine.