Steps
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Uninstall all Kaspersky products from Control Panel (Normal uninstall), Then restart your windows.
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Open Run command box (Windows + R buttons from Keyboard), and type Regedit then press Enter.
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From Registry, Go to → Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\SPC\Certificates
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Delete the “Certificates” Folder.
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Open Kaspersky Website and Download Official Free Trial Version then install it.
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Done, Now you have another 30-day free trial license.
Happy learning!