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Record the system environment: after the IIS service of windows2016
mysql5.6.27 database is started, log in and enter the main interface to report an error. There is no. Net framework data provider for MySQL in the data provider

Solution: because the windows server system is not in accordance with MySQL connect, resulting in unable to parse MySQL connection string. Download from the official website: mysql-connector-net-6.10.9 https://dev.mysql.com/downloads/connector/net/ Click on the previous version

Find the version to download and install

Restart the service to open L