When you install update 938371 from Windows Update, you may lose access to the USB mouse or the USB keyboard on a computer that is running Windows Vista.
- This problem occurs when a very specific chain of events occurs in a specific order. This problem is not common. But when this problem occurs, it is very difficult to troubleshoot because you may lose access to the mouse and the keyboard. And, such access is required to troubleshoot the problem.
- See the “Advanced Troubleshooting” section for more information about the conditions in which this problem is known to occur and about the cause of the problem.