Classic asp IIS 8 404.17
If the Application Pool is running 32Bit mode, the Handeler mapping for *.asp needs to be:
%windir%\SysWOW64\inetsrv\asp.dll
If the Application Pool is running 32Bit mode, the Handeler mapping for *.asp needs to be:
%windir%\SysWOW64\inetsrv\asp.dll