Event Message:

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 the event log in Event Viewer.

Source Event Log Event ID Event Type
Browser System 8019 Error

Explanation:

The browser has attempted to promote itself to the master browser more than 25 times.

User Action:

Contact your network administrator. The network administrator can change the TCP/IP protocol configuration to the correct subnet mask.