1. Disconnect from the internet.
2. Install software as trial.
3. Go to C:\Windows\system32\drivers\etc\ and open "hosts" file with NotePad. Add these strings to the bottom of the list and save.

127.0.0.1 activate.adobe.com
127.0.0.1 practivate.adobe.com
127.0.0.1 lmlicenses.wip4.adobe.com
127.0.0.1 lm.licenses.adobe.com
127.0.0.1 na1r.services.adobe.com
127.0.0.1 hlrcv.stage.adobe.com

4. Open software, create a new page/project, close the program. (This is necessary for using 3D effects later.)

5. Copy amtlib.dll from Crack folder to C:/Program Files/Adobe/Adobe Illustrator CC 2015\Support Files\Contents\Windows.

That's it. Now you can open your internet connection and start using this software as usual without any problem.

P.S. If you're facing "this software isn't genuine" error and its interrupt to install process, use "autoplay.exe" instead of usual Setup.exe in the Adobe CC 2015 folder to starting install process.