AWS SDK Version 3 for .NET
API Reference

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Creates an event window in which scheduled events for the associated Amazon EC2 instances can run.

You can define either a set of time ranges or a cron expression when creating the event window, but not both. All event window times are in UTC.

You can create up to 200 event windows per Amazon Web Services Region.

When you create the event window, targets (instance IDs, Dedicated Host IDs, or tags) are not yet associated with it. To ensure that the event window can be used, you must associate one or more targets with it by using the AssociateInstanceEventWindow API.

Event windows are applicable only for scheduled events that stop, reboot, or terminate instances.

Event windows are not applicable for:

  • Expedited scheduled events and network maintenance events.

  • Unscheduled maintenance such as AutoRecovery and unplanned reboots.

For more information, see Define event windows for scheduled events in the Amazon EC2 User Guide.


This is an asynchronous operation using the standard naming convention for .NET 4.5 or higher. For .NET 3.5 the operation is implemented as a pair of methods using the standard naming convention of BeginCreateInstanceEventWindow and EndCreateInstanceEventWindow.

Namespace: Amazon.EC2
Assembly: AWSSDK.EC2.dll
Version: 3.x.y.z


public virtual Task<CreateInstanceEventWindowResponse> CreateInstanceEventWindowAsync(
         CreateInstanceEventWindowRequest request,
         CancellationToken cancellationToken


Type: Amazon.EC2.Model.CreateInstanceEventWindowRequest

Container for the necessary parameters to execute the CreateInstanceEventWindow service method.

Type: System.Threading.CancellationToken

A cancellation token that can be used by other objects or threads to receive notice of cancellation.

Return Value

The response from the CreateInstanceEventWindow service method, as returned by EC2.

Version Information

.NET Core App:
Supported in: 3.1

.NET Standard:
Supported in: 2.0

.NET Framework:
Supported in: 4.5

See Also