AWS PV drivers also have a Windows service named LiteAgent, which runs in user-mode. It handles tasks such as shutdown and restart events from AWS APIs on Xen generation instances. You can access and manage services by running Services.msc from the command line. When running on Nitro generation instances, the AWS PV drivers are not used and the LiteAgent service will self-stop starting with driver version 8.2.4. Updating to the latest AWS PV driver also updates the LiteAgent and improves reliability on all instance generations.