Techniques for optimizing window resize actions for a remoted application are provided, where the remoted application has a server-side window running within a remote desktop of a server system, and where the server-side window is made accessible to a user of a client system as a client-side window displayed in a client desktop of the client system. In one embodiment, the client system can receive from the server system a notification that the server-side window is being resized in the remote desktop, and can determine that the user is currently entering one or more input commands for resizing the server-side window. In response, the client system can send a message to the server system for canceling the resizing of the server-side window. The client system can then allow the user to resize the client-side window via the one or more input commands, while the server-side window remains a fixed size.