According to Wikipedia, the sending host can send only up to that amount of data before it must wait for an acknowledgment and window update from the receiving host. When a receiver advertises the window size of 0, the sender stops sending data and starts the persist timer. The persist timer is used to protect TCP from the dead lock situation. While Windows 11 doesn’t shake things up too much, it’s still a major version upgrade. If the task executes successfully, you
