![]() ![]() ![]() The API that returns this error is tcpRecv. The win32 error maps to ERROR_SEM_TIMEOUT. Semaphores are nothing but a piece of code on which only one thread is allowed to take lock at a time while other threads have to wait. After finding the port you can add this port on windows firewall to allow connection from other instances on different server.You can also check service name corresponding to PID by this syntax on command prompt – tasklist /svc /FI “PID eq 4”.To check port on which SQL Server services are running match PID with ports list that are listening,. ![]() Goto Windows Task Manager to check the SQL Server service PID.In this case the error was resolved by allowing access by the primary server to the port 1433(SQL service default port) of secondary server on Windows Firewall settings responsible for handling the network of both servers. (provider: TCP Provider, error: 0 – The semaphore timeout period has expired.)(Microsoft SQL Server, Error: 121) Error :Ī connection was successfully established with the server, but then an error occurred during the pre-login handshake. Also, the same error occurred while connecting the instance of secondary server from primary server. This error was encountered during setting up log shipping from primary database to secondary database SQL Server 2012 standard edition.
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