Why can't navicat connect to the virtual machine?

The reasons for failure to connect to the Navicat virtual machine include: Firewall blocking port 3306 Network configuration error (IP address, port number) MySQL service is not running Insufficient user permissions Navicat version is too low Port mapping problem (non-standard port) Other connections Problems (network connection, DNS settings)

Cause and solution why Navicat cannot connect to the virtual machine

Cause 1: Firewall or security group blocks

• Solution: Allow incoming connections to Navicat port 3306 (default) in the firewall or security group.

Cause 2: Network configuration error

• Solution:Check whether the IP address and port number of the virtual machine are correct . Make sure Navicat is connected to a computer on the same network as the virtual machine.
• If the virtual machine uses NAT mode, make sure the host computer is bridged to the same network.

Cause 3: The MySQL service is not running

• Solution: Start the MySQL service in the virtual machine. This can be done via an SSH connection or using a virtual machine manager.

Cause 4: Insufficient user permissions

• Solution: Ensure that the user used in Navicat has the authority to connect to the MySQL database permission. Grant the user the appropriate privileges in MySQL.

Cause 5: Navicat version is too low

• Solution: Make sure to use the latest version of Navicat. Older versions may not be able to connect to newer MySQL versions.

Cause 6: Port mapping problem

• Solution:If Navicat tries to connect to a virtual machine running For MySQL instances with non-standard ports, please ensure that the mapped port is correct. Port mapping can be set up in Virtual Machine Manager.

Cause 7: Other connection issues

• Solution:Try pinging the IP address of the virtual machine to check the network connection . Check the DNS settings on the computer to ensure that the virtual machine's name can be resolved.

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