Ifyou connect to SQL Server 2017 by using IntegratedAuthentication, then TCP Timeout or login time-out error may occur. After you apply Cumulative Update 13, Active Directory lookup for SID will switch to pre-emptive mode and avoid non-yield errors during login process.
The issue is fixed in the following cumulative update for SQL Server:
Each new cumulative update for SQL Server contains all thehotfixes and all the security fixes that were included with the previouscumulative update. Check out the latest cumulative updates for SQL Server: