2.Click "setting"(right,on the top)
3.On the left,choose "option"(gear picture)
4.Empty the box "enable protection"
5.Close your kaspersky.
6.Click start>>type "run">>type "regedit">>enter or OK
7.At the column on the left side,find HKEY_LOCAL_MACHINE>>SOFTWARE>>KasperskyLab>>protected>>AVP9>>environment
8.On the right column,choose PCID
9.Substitute the alphabet with any other alphabet.For example:
{46D61F11-F593-44AD-A636-5E0135393EDE} with {46D61F11-F593-44AD-A636-5E0135393EDF}
Last but not least:-
close registry editor then restart your computer.
Next,click kaspersky and activate trial..and it will be 30 days back as usual..thank you..:D