Why can't navicat connect?

The main reasons for Navicat connection failure are: database setting errors (database name, host address, port number, user name/password) firewall or security group restrictions network problems driver problems related services are not running other reasons (connection Limitations, technical issues, Navicat errors)

Reasons why Navicat cannot connect

1. Database settings Error

• Check that the database name, host address, port number and username/password are correct.
• Make sure the database is running.

2. Firewall or security group restrictions

• Check whether the firewall or security group allows Navicat to connect to the database server.
• Make sure the database port on the server is open.

3. Network issues

• Make sure you have a good network connection.
• Ping the database server to check connectivity.

4. Driver issues

• Make sure the correct database driver is installed.
• Check whether the driver is compatible with the database server.

5. The service is not running

• For some database servers (such as Microsoft SQL Server), specific services need to be running to connect.
• Check if the service is running and started.

6. Other reasons

• The database server may have reached the connection limit.
• The database server may be experiencing technical problems.
• Navicat may be buggy or corrupt.

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