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This article is about what navicat connection error 2005 means. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Error description:

When using navicat to connect to the mysql database, there will be: mysql error 2005-Unknown MySQL server host' localhost' (0) error; when checking the connection information, connection attribute information, user name and password are all correct, the IP address is: localhost, the database can be opened normally when there is a network, but an error occurs as soon as the network is disconnected.

Solutions are as follows:

When using navicat to create a mysql connection, fill in the host or IP address column: 127.0.0.1 instead of localhost, and then in the case of network disconnection, you will find that the connection can be successful.

Cause of error:

In the case of a network, the localhost is automatically resolved to 127.0.0.1, while in the case of disconnection, localhost is only a string and does not represent an ip address.

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