9.2 "Error while trying to login to Firebird server....Failed to establish a connection. Access is denied" using KingSoft IS

Below the common message will be prompted when the Windows Firewall has turn-ON or controlled others anti-virus application.

A. Below error message when you have test over the Firebird 1.5 server connection by click on Test Connection at client PC.

B. Another error message when you have try to login the database at client PC.

SOLUTION:

1. Open the KingSoft Personal Firewall and follow the below screenshot as ring-up in RED.

SQL Financial Accounting LAN : ALLOW INTERNET : ALLOW

Firebird SQL Server LAN : ALLOW INTERNET : ALLOW

2. Go to Control Panel | Administrative Tools | Services. Look for Firebird Server - DefaultInstance; and double click it.

3. Press STOP button and START back.

You will able to login the SQL Acc database as usual.