Windows 7, 32-bit, reached End of Life on January 14, 2020. In the eyes of Microsoft, it is a corpse. The automatic update servers are either shut down or deliberately obtuse. The online installer for .NET 3.5 tries to phone home, finds the line dead, and returns a cryptic: "0x800F0906 - CBS_E_TRUST_FAILURE."
: Ensure you download the "Full Package" (approx. 231 MB) rather than the "bootstrapper" (approx. 2.8 MB), as the latter requires an internet connection during installation. Transfer & Run : Move the dotnetfx35.exe file to your Windows 7 machine. : Right-click the installer and select Run as Administrator . Follow the prompts to complete the setup. net framework 3.5 offline installer windows 7 32 bit
