Software

When I try to install some software I sometimes get a box come with the following message in it:

16bit Windows Subsystem ? C:\Windows\System32\Autoexec.NT

The system file is not suitable for running MS-DOS and Microsoft Windows Application Choose ?Close? to terminate the application.

I am then given a choice of 2 boxes with Close in one and terminate in the other

Can anyone tell me how to overcome this problem and install the program