Knowledge Base

HyperTerminal May Drop Characters When Using Z-Modem

Article ID: 167199

Article Last Modified on 11/1/2006

Microsoft Windows NT Workstation 4.0 Developer Edition
Microsoft Windows NT Server 4.0 Standard Edition

This article was previously published under Q167199

SYMPTOMS

HyperTerminal with Z-modem transfer mode using baud rates of 57,600 or higher may cause packets to be dropped or incorrect file transfers to occur. Additionally, transfers may be successful only after a large number of retries.

WORKAROUND

Use baud rates below 38,400 or use a higher baud rate but with a protocol other than Z-Modem.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem was corrected in the latest Microsoft Windows NT 4.0 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

MORE INFORMATION

This problem has been reported on modems from several different modem manufacturers and does not appear to be modem specific.

Keywords: kbbug kbfix kbinterop KB167199