“The version of this file is not compatible with the version of Windows you’re running. Check your computer’s system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher.”
Audacity 2.1.0 for Windows has been built with a later version of Microsoft visual studio. If your computer does not have sufficiently up to date run-time libraries, that could account for the problem.
The developers were wanting to avoid breaking support for Windows XP as there are still such a high percentage of people using the obsolete operating system, so the build options in VS2013 were selected to allow Audacity to continue working on XP, therefore Audacity 2.1.0 should be compatible with all versions of Windows from XP SP3 onward.
I rarely use Windows, so I’m not really the best person to help. No doubt one of the Windows guys will be along at some point, but in the mean time I think that it could be worth you trying compatibility mode. Have you tried that?
I have just installed Audacity 2.1.0 as available from http://www.fosshub.com/Audacity.html/audacity-win-2.1.0.exe on Windows 8.1 64 bits with all MS updates.
No problem to report. Everything went fine. There was no need for any compatibility mode. I installed it into the default “C:Program Files (x86)Audacity” folder.
Thanks for the suggestion, but it did not change the error dialog shown at the start of installation. Here’s more info:
Audacity 2.0.6 is still installed and runs fine. It installed without problems last fall.
Per your suggestion, I followed your link and it installed
Microsoft Visual C++ 2013 Redistributable (x86) - 12.0.30501
and I rebooted.
The following were previously installed, and still are installed:
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.17
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.6161
Microsoft Visual C++ 2010 x64 Redistributable - 10.0.40219
Microsoft Visual C++ 2010 x86 Redistributable - 10.0.40219
OK, I figured out the problem. When I go to http://audacityteam.org/
and fly over “Download Audacity 2.1.0”, it shows http://www.fosshub.com/Audacity.html/audacity-win-2.1.0.exe
so I should be able to right-mouse “save link as” and then run the result, right? Nope! That gives you a 58KB file instead of the actual software installer. I clicked through the link instead, and that gives the correct result, which installs and runs correctly.