System.Data.SqlClient.SqlException (0x80131904): Connection Timeout Expired. The timeout period elapsed during the post-login phase. · Issue #294 · dotnetcore/FreeSql · GitHub
Solved: Compliance import with SQL Server compatibility level 2016 fails with error: 'Execution Timeout Expi... - Page 2 - Community
c# sql server update table connection timeout - Stack Overflow
4x - Execution Timeout Expired. The timeout period elapsed prior to completion of the operation or the server is not responding. – Solver Support