What are the common causes of an ODBC connection failure with error 1326?

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Grade: Education Subject: Support
What are the common causes of an ODBC connection failure with error 1326?
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Common causes include incorrect SQL Server instance name, incorrect username or password, SQL Server service not running, firewall blocking the connection, network connectivity issues, or problems with the ODBC data source name (DSN) configuration. Also, network latency can sometimes trigger this error.