To run Audacity 2.4.2 successfully download and install the following files offline:
In my case, Windows 7 Pro x64. I have installed it under C:\Program Files (x86)
- Visual C++ Redistributable for Visual Studio 2015 (vc_redist.x86.exe, vc_redist.x64.exe).
https://www.microsoft.com/en-us/download/details.aspx?id=48145 - NET frame work 4.7.2 offline installer (Do not use online or web installer. Microsoft might install other files which are not necessary)
https://support.microsoft.com/en-us/help/4054530/microsoft-net-framework-4-7-2-offline-installer-for-windows - audacity-win-2.4.2.exe
- ffmpeg-win-2.2.2.exe
https://lame.buanzo.org/#lamewindl - Lame_v3.99.3_for_Windows.exe
https://lame.buanzo.org/#lamewindl (same page as lame)
If you do get an error with the file “api-ms-win-crt-runtime-l1-1-0.dll”, the above installation will resolve it (usually step 1 will resolve the error)
Good Luck