I find this trouble while trying to activate Kaspersky Antivirus 2012

I find this trouble while trying to activate Kaspersky Antivirus 2012

Hi,

If it is not the installation itself that is having an issue, we might be looking at other issues here. These are some of them:

• Firewall settings – if your Windows firewall (assuming you are using Windows operating system for this one) is too protected, chances are that it will block any new installation that may eventually block itself. These kind of software usually has its own firewall so it might conflict with your existing firewall which is built in on Windows. You may want to lower the settings of your Windows firewall for the meantime and as soon as you are done installing Kaspersky, you may want to bring back the settings of your firewall. To get the detailed facts about Windows firewall, you can go here.
• Incorrect system date – the system date on your computer is either incorrect or set to an earlier time. The installation will track your installation date (for warranty purpose later) so you have to make sure that your date is correct. In case the year was set to an even earlier year, it will be generating an error such as the one above. You can check the date at the bottom right screen of your window where you can see the time. Double click it and you will see the date and time set on your system. You can go here for checking the date on your pc.
• Internet connection loss – if you are downloading it from a site, then your internet connection might have stopped while you are in the middle of it. Check if you are still connected with trying other sites first. If it is working, look at other issues listed here
• Close all other programs – programs running in the background can interfere with your installation or activation. If you are not a fan of m​ultitasking, try closing other windows or programs first and let Kaspersky be the only running. 
• The installation might have stalled. Try doing this after an hour. 
• Has it been a year since you bought it and you are going to install it just now? Your license key validity is only for a year.

Or, you may want to try these steps:

• Click :"Activate trial version"
• Click Next
• Click Finish
• Click Update
• Click Update Run Update 100%
• Click Manage License
• Click on Enter Activation Code
• Enter the 20 activation code
• Click Next
• Click Finish

I hope this solves the issue with your Kaspersky Anti Virus 2012 installation.

Good luck!