Knowledge Base

File Transfers Using TCP/IP-32 Take a Long Time

Article ID: 129127

Article Last Modified on 10/13/2003

Microsoft TCP/IP for Windows for Workgroups 3.11a
Microsoft Windows for Workgroups 3.11

This article was previously published under Q129127

SYMPTOMS

File transfers to a computer running Windows for Workgroups 3.11 and TCP/IP- 32 may take a long time.

CAUSE

This problem can occur when the TCP Receive window size shrinks down to 1460 bytes, which is equal to the TCP segment size. It takes the Windows for Workgroups 3.11 client approximately 200 milliseconds to send an acknowledgment (ACK).

STATUS

Microsoft has confirmed this to be a problem in Microsoft TCP/IP-32 for Windows for Workgroups, version 3.11a. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: prodtcp32 wfw wfwg

Keywords: KB129127