During the installation of a Kaspersky Lab product, in the Activation window you may see the error message "Key file creation or registration date is invalid. Check system date settings". You can use the following methods to fix the problem:
Check if the system date is set correctly on your computer. If the system date is incorrect, set it correctly.
After checking the system date, activate the application once again (in about an hour).
If the error persists, send a request with a detailed description of the problem to Kaspersky Lab technical support:
How to fix a system time, date, and time zoneHow to activate a commercial version of Kaspersky Internet Security 2015
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