Which of the following is the MOST likely cause and best method to fix the issue?

A company upgraded a hosted vulnerability scanner to the latest version, and now tickets are not being created to assign critical vulnerabilities. After confirming the ticketing issue, all the scanning services are confirmed to be running on the VM.

Which of the following is the MOST likely cause and best method to fix the issue?
A . There was an IP change to the V
B . Make changes to the server properties.
C . The upgrade has a bug Reboot the server and attempt the upgrade again.
D . The vulnerability scanner is on a different subnet. Open the ports, and it will reconnect.
E . There is an application compatibility issue. Roll back to the previous working backup.

Answer: D