Before you begin, make sure you understand these important considerations:

• When you stop an instance, the data on any instance store volumes is erased. Therefore, if you have any data on instance store volumes that you want to keep, be sure to back it up to persistent storage.
• The public IP address for your instance is released when it's stopped or terminated, and a stopped instance receives a new public IP address after it is restarted. Be sure that your applications don't depend on the public IP address, because the IP address cannot be recovered. Assigning an Elastic IP address is a recommended best practice, because the IP address remains with the instance when the instance is stopped and then restarted.
• If the instance is functioning as a domain controller, additional steps are required. For more information, see Upgrade an Instance that is a Domain Controller (AWS PV Driver Upgrade).
• For instances that support enhanced networking, see Enhanced Networking on Windows.
• For instance types with EBS volumes exposed as NVMe block devices, see
  AWS NVMe Drivers for Windows Instances.

To upgrade to the latest PV driver:

1. In the Amazon EC2 console, choose Instances from the navigation pane.
2. Choose the instance that requires the driver upgrade, open the context (right-click) menu, choose Instance State, and then choose Stop.
3. After the instance is stopped, create a backup. Open the context (right-click) menu for the instance, choose Image, and then choose Create Image. For more information, see Creating a Windows AMI from a Running Instance.
4. From the context (right-click) menu for the instance, choose Instance State, and then choose Start.
5. Connect to the instance using Remote Desktop Connection (RDP). For more information, see Connecting to Your Windows Instance.
6. Extract the contents of the folder and then run AWSPVDriverSetup.msi.

After you run the MSI, the instance automatically reboots and then upgrades the driver. The instance might not be available for up to 15 minutes. After the upgrade completes and the instance passes both health checks in the Amazon EC2 console, connect to the instance using Remote Desktop Connection. Then, verify that the new driver is installed. In Device Manager, under Storage Controllers, locate AWS PV Storage Host Adapter. Verify that the driver version is the same as the latest version listed in the Driver Version History table. For more information, see AWS PV Driver Version History.

You now have the latest PV drivers installed for your EC2 Windows instance.