When you use a wireless network connection to copy a large file from one Windows Vista-based computer to another Windows Vista-based computer, you may receive an error message that resembles one of the following:
Error message 1

The connection has been lost.

Error message 2

There is a problem accessing shared folder path.
Make sure you are connected to the network and try again.

This problem occurs when both computers are using a wireless connection and when the file is approximately 100 megabytes (MB) or larger. The problem may also be affected by network traffic and by the distance from the access point. For example, the problem may be more likely to occur when the wireless signal is weak.