Sorry people but I had no problem activating the code.. win10 home-64bit.. I did already have the installed program on my computer so I would suggest you go to the source web site, download/install the the current version then come back here and copy the code then paste in the installed program, see if that works. I have used Iobit for several years and have had no issues.. this is a good opportunity to get acquainted with their products as they sell at a bargain once you become a customer. Consequently, Zamana is not as accurate as supposed.. I had it through SoS and it claimed 2/3rds of my programs were corrupted then started to quarantine them.. After checking various other security programs and knowing that through the 5 years I’ve had them that not one time did I ever get infected so I took them out of quarantine and then rechecked with zamana, conclusion; no problems.. next day the same results as the first time (corruption) but instead of rechecking, I uninstalled zamana took the programs back out of quarantine and have had no problems since. I’m not saying zam is worthless but it didn’t work for me.