computer browser conflict

This problem is linked to subnet mask.

A Windows NT primary domain controller (PDC) and a Windows NT client computer reside on the same physical subnet and the same domain. The client computer can connect to a network share on the PDC. In the Windows NT PDC, the following system event appears in Event Viewer:
Event ID: 8003
Description: The master browser has received a server announcement from the computer that believes that it is the master browser for the domain on transport . The master browser is stopping or an election is being forced.

In the Windows NT client computer, the following system events appear in Event Viewer:
Event ID: 8009
Description: The browser was unable to promote itself to master browser. The computer that currently believes it is the master browser is .

Event ID: 8019
Description: The browser was unable to promote itself to master browser. The browser will continue to attempt to promote itself to the master browser, but will no longer log any events in Event Viewer.

This problem occurs if the subnet mask of the Windows NT client computer is incorrect or different from the PDC. The client computer attempts to promote itself to the master browser of the subnet and fails