Two operations are performed based on the Administration Server certificate: Administration Server authentication during connection by Administration Console and data exchange with devices. The certificate is also used for authentication when the primary Administration Servers are connected to secondary Administration Servers.
Certificate issued by Kaspersky
The Administration Server certificate is created automatically during installation of the Administration Server component and it is stored in the %ALLUSERSPROFILE%\Application Data\KasperskyLab\adminkit\1093\cert folder.
The Administration Server certificate is valid for five years, if the certificate was issued before September 1, 2020. Otherwise, the certificate validity term is limited to 397 days. A new certificate is generated by the Administration Server as the reserve certificate 90 days before the expiration date of the current certificate. Subsequently, the new certificate automatically replaces the current certificate one day before the expiration date. All Network Agents on the client devices are automatically reconfigured to authenticate the Administration Server with the new certificate.
Custom certificates
If necessary, you can assign a custom certificate for the Administration Server. For example, this may be necessary for better integration with the existing PKI of your enterprise or for custom configuration of the certificate fields.
The maximum validity period for any of the Administration Server certificates must be 397 days or less.
When replacing the certificate, all Network Agents that were previously connected to Administration Server through SSL, will lose their connection and will return "Administration Server authentication error." To eliminate this error, you will have to restore the connection after the certificate replacement.
If the Administration Server certificate is lost, you must reinstall the Administration Server component, and then restore the data in order to recover it.
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