We have small business server with 7 workstations all running Avast. One system send a notification that the server root certificate is expired and causes that particular system to slow down. None of the others do this, Why and how do I find the issue on that one particular system.
Are you using a specific Avast Business product ?
If so I’m not sure what business product you are using, check the sub-forums in the Avast Business forum and check the most appropriate sub-forum and post there.