We previously advised you of important security and operational updates which will require a reboot of one or more of your Amazon EC2 instances in the US-EAST-1 region. Unfortunately, we must accelerate the planned reboot times for these instances given anticipated publication of new research findings.

The new maintenance window has been scheduled between January 4, 2018 at 8:00 AM UTC (12:00AM PST) and January 4, 2018 at 2:00 PM UTC (6:00AM PST) during which the EC2 service will automatically perform the required reboot. During the maintenance window, the affected instance will be unavailable for a short period of time as it reboots. We will be performing this maintenance in a single Availability Zone of each Region at a time. For more information on EC2 maintenance, please see our documentation here: https://aws.amazon.com/maintenance-help/ .

To avoid your scheduled reboot, you are able to reboot this instance any time prior to the maintenance window. More details on rebooting your instances yourself can be found here: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-reboot.html

To see which of your instances are impacted, please visit the 'Events' page on the EC2 console to view your instances that are scheduled for maintenance:

https://us-east-1.console.aws.amazon.com/ec2/v2/home?region=us-east-1#Events

Sincerely, Amazon Web Services