How to resolve the issue of unsuccessful creation of a new connection in Navicat?

If you are unable to successfully establish a new connection in Navicat, there may be the following issues and solutions: 1. Check if the connection information is correct: make sure the inputted hostname, port number, username, and password are correct and error-free. Pay attention to uppercase, lowercase, and special characters. 2. Check network connectivity: verify that the network connection is working properly, and try using an alternative network connection method for testing. 3. Check the status of the database server: ensure that the database server is running and functioning properly. 4. Check firewall settings: if a firewall is being used, ensure that the port number is not being blocked. You can try disabling the firewall or adding exception rules. 5. Check database permissions: make sure the user has sufficient permissions to access the database. You can try logging in with an administrator account. 6. Check compatibility between the Navicat version and the database version: ensure compatibility between the Navicat version and the database version. Try updating Navicat or the database driver. 7. Check other possible reasons: if the above methods are ineffective, there may be other reasons for the connection failure. Try reinstalling Navicat or contacting Navicat’s official technical support for assistance.