Hello.
We upgraded from 7.3.1 to 7.4.11 on Saturday but today Confluence server went down and now we are no able to get access to it. (connection refused).
I can see this message in the logs:
07-Sep-2021 09:40:53.512 SEVERE [https-jsse-nio2-443-exec-4] org.apache.tomcat.util.net.Nio2Endpoint$Nio2Acceptor.failed Socket accept failed
java.io.IOException: The specified network name is no longer available.
at java.base/sun.nio.ch.Iocp.translateErrorToIOException(Unknown Source)
at java.base/sun.nio.ch.Iocp$EventHandlerTask.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Kind regards.