Error "Key file creation or registration date is invalid. Check system date settings"

Issue

During the installation of a Kaspersky application, in the Activation window you may get the error "Key file creation or registration date is invalid. Check system date settings". 

Solution

1. Check if the system date is set correctly on your computer. For instructions, see this article. If the system date is incorrect, set it correctly.  
2. After checking the system date, activate the application once again (in about an hour).

 

What to do if the solution did not help

Useful references

How to fix a system time, date, and time zone