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Sebastian EdwardsSebastian Edwards 

API link between Salesforce and our system no longer working

We have an API call between our internal systems which creates a lead in Salesforce when we receive an application on our website. As of the 9th of May this is no longer working and our error logs the following message:

----------------- INNER EXCEPTION ----------------- IOException Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Security._SslStream.StartFrameHeader(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest) at System.Net.Security._SslStream.StartReading(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest) at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest) at System.Net.TlsStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.PooledStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.Connection.SyncRead(HttpWebRequest request, Boolean userRetrievedStream, Boolean probeRead) ----------------- INNER EXCEPTION ----------------- SocketException An existing connection was forcibly closed by the remote host at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) ------------------- ENVIRONMENT --------------------

Our tech teams assure me nothing has changed on our end. Can anyone advise what might have happened?

Thanks,
Sebastian

Lokesh KumarLokesh Kumar
Check the API user and you need to troubleshoot more in salesforce system.