Lesson Learned #433:Azure SQL Pre-login Handshake Error 64:"The specified network name is no longer"
Encountering error code 64 while connecting to an Azure SQL Database can be a frustrating experience for both DBAs and developers. The error often looks like this: A Connection was sucessfully establish with the server, but then an error occurred during the pre-login handshake (Provider: TCP Provider, Error:0 - The specified network name is no longer available) (Micorosoft SQL Server, Error: 64) - This article aims to clarify the potential causes of this specific error message and offers targeted solutions. Special attention is given to transitions from public to private endpoints within Azure SQL Database, which may trigger this issue.
