


Use one of the following methods to install the updates. You need to install updates for KB4490628 and KB4474419, so that Kaspersky Internet Security modules and drivers could be signed using SHA256 hashing algorithm. Now modules and drivers of third-party applications (including Kaspersky) are signed using SHA256 hashing algorithm. Installation error occurs as a result of Microsoft having updated the algorithm for signing modules and drivers of third-party applications. Kaspersky Internet Security cannot be installed on Microsoft Windows 7 and Miсrosoft Windows Server 2008 R2 if the following updates are not installed: Application installation error on Windows 7 and Windows Server 2008 R2
