easy
assalam alikum
after you complete the download, you have to open a faile that is called (read me) , then you will see the following
HYSYS v3.2 (Hysys 3.1 license)
INSTALL NOTES:
1. Install in standalone mode without using any license file
2. Copy dll to '\Program Files\Common Files\Hyprotech\Shared' folder
3. Copy lservrc to '\Program Files\Hyprotech\HYSYS 3.2' folder
so as written above,
you have to copy the file that is called (dll) and put it in the direction that is specified above
and then copy the file (iservrc) and put it in the specified file
that is all
the same problem happened to me
but now i can use it