Event ID: 3 Source: SQLBrowser The configuration of the AdminConnection\TCP protocol in the SQL instance is not valid.

Log: Application
Type: Warning
Event: 3
Agent Time: xxx
Event Time: xxx
Source: SQLBrowser
Category: None
Username: N/A
Computer: xxx
Description: The configuration of the AdminConnection\TCP protocol in the SQL instance sqlserverinstancename is not valid.

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Resolution:
start
run
regedit
navigate to registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL.1\MSSQLServer\SuperSocketNetLib\AdminConnection\Tcp\TcpDynamicPorts

The default value is set to 0. Change it to 1434.
Close registry editor.

Restart the SQL Browser service.