If KSC shows update errors, console freezing or is inaccessible after installing on Microsoft SQL Server 2019 and there are database errors in the event log, then these issues are caused by a bug in Microsoft SQL server. To fix this, install the latest cumulative update from Microsoft: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updates, or run the script from KSC Online Help: https://support.kaspersky.com/ksc/14.2/92403