The .NET Framework 4.9 offline installer is a standalone installer that allows you to install the .NET Framework 4.9 on a Windows machine without an internet connection. This can be useful in several scenarios:
Use the command line switches mentioned in Step 4. Combine with a deployment tool like SCCM, PDQ, or Group Policy Startup script: .NET Framework 4.9 Offline Installer for Windows
NDP481-x86-x64-AllOS-ENU.exe /q /norestart /log %temp%\net48_install.log .NET Framework 4.9 Offline Installer for Windows
If you need an offline installer for a legacy or mislabeled application, this guide will walk you through getting the correct file. .NET Framework 4.9 Offline Installer for Windows