If you are new to NI Multisim follow the next procedure:
1. Make sure you are disconnected from the Internet
2. Unzip and unrar.
3. Install program using serial:F44G44444 when asked for (many thanks go to the F4CG group).
4. Uncheck: Request the installer to contact National Instruments......
5. The installation will end with an error about the update service... (because of the disconnected Internet)
6. Click OK to terminate UpdateService.exe
7. Choose Restart Later (actually not needed to reload).
8. Use the keygen (kg_v1101.exe) to generate the licenses.
9. Install license files using NI License Manager.
10. Just to be sure for the future (lol). Delete all the original *.lc files in:
\Program Files\National Instruments\Shared\License Manager\Licenses
11. Enjoy!