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Error 10054 signals that SQL Server’s TCP socket was forcibly closed by the remote host, abruptly cutting off active queries or logins.
SQL Server Error 10054 means the TCP connection was closed by the remote host, often by a firewall, network drop, or server restart. Stabilize the network path, add keep-alives or retries, and open required SQL ports to fix the issue.
Msg 10054, Level 20, State 0, Line 0 A transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)
Error 10054 appears when SQL Server or its client loses the TCP socket because the remote host terminates the connection. The driver throws a transport-level error, halting any running batch.The failure is network-side; the database engine normally stays healthy. Long-running queries, idle pooled connections, or heavy packet loss often trigger the disconnect.
Firewalls or intrusion-detection devices silently drop idle or long-lived packets, forcing the socket to close.Network glitches such as VPN drops, Wi-Fi roaming, or cable pulls interrupt the TCP stream mid-query, raising error 10054.SQL Server closes sockets during failover, restart, or login timeouts, and the client receives the same code.
Validate connectivity first—ping the host, run telnet <server> 1433, and inspect ERRORLOG for matching disconnects.Lower idle timeouts on firewalls or enable keep-alive packets in the driver so devices do not kill the session.Increase Connect Timeout, tune Network Packet Size, or use MultiSubnetFailover=True to ride out brief drops.Add retry logic in the application using TRY…CATCH, connection resiliency, or client libraries that support built-in retries.
Azure SQL connections through ExpressRoute may drop; adding ApplicationIntent=ReadWrite and an exponential-backoff retry policy fixes most events.SSIS packages fail mid-ETL; commit in smaller batches and set ValidateExternalMetadata=False to resume safely.VPNs that re-authenticate every hour drop sockets; schedule a SELECT 1 ping every five minutes to keep the link fresh.
Host SQL Server on a static IP and keep port 1433 open across all intermediate firewalls.Configure Windows registry key TCPKeepAlive to 30 000 ms on both client and server, ensuring regular keep-alive packets.Use Galaxy’s AI copilot to generate retry-ready SQL and monitor long-running queries inside the modern editor, reducing manual rewrites.
Error 64 “connection was forcibly closed” and error 0 “communication link failure” share the same root networking issues; identical network hardening steps resolve them.Error 233 arises when SQL Browser is unavailable—opening port 1434 or explicitly naming the instance solves the problem.
Network firewalls drop idle SQL connections, causing abrupt socket closure.High packet loss or unstable Wi-Fi interrupts active TCP streams.SQL Server restarts, cluster failovers, or login timeouts sever existing sessions.VPN renegotiation or ISP equipment forcefully resets long-lived sockets.
• Error 64: The specified network name is no longer available.• Error 0: Communication link failure.• Error 233: No process is on the other end of the pipe.• Error 10053: An established connection was aborted by the software in your host machine.
No. The engine usually remains online; the network link was lost.
Avoid ignoring it—data changes may be half-committed. Always add retries or confirm transaction status.
Keep TCP 1433 (default instance) and TCP 1434 (SQL Browser) open end-to-end.
Galaxy’s AI copilot writes retry-ready SQL and its editor monitors long-running queries, alerting you before a disconnect occurs.
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