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SharpSSH error - Tamir.SharpSsh.jsch.JSchException: invalid server's version String

Posted on 2013-01-10
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Last Modified: 2013-01-11
I get a error returned when I get to the port directive of SharpSSH
although, It worked once during testing.

Tamir.SharpSsh.jsch.JSchException: invalid server's version String
   at Tamir.SharpSsh.jsch.Session.connect(Int32 connectTimeout)
   at Tamir.SharpSsh.jsch.Session.connect()
   at Tamir.SharpSsh.SshBase.ConnectSession(Int32 tcpPort)
   at Tamir.SharpSsh.SshBase.Connect(Int32 tcpPort)
   at DEPRO_SPARK_CRM.Program.processMailer() in C:\_TFS\DendreonSPARKAutomation
\DEPRO-SPARK-CRM\Program.cs:line 139 Exception caught

I understand that this error might occur if the remote server is using SSH 1.5.

I haven't been able to get an answer as of yet.

Is there anything you can share.

Isaac
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Question by:TechIsaac
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masterpass earned 500 total points
ID: 38764978
I ran into the similiar problem and it took me a lot of time to find the real cause of this issue. IMO there are two cases :

1. make sure that the sFTP version is SSH 2.0 or higher
2. The server you are trying to connect to is rejecting connection (this was the cause in my case)

What happened in our case was that, the machine was configured in such a way that it did not allow more than 1 connection in a time interval of 20 minutes which means that if I have a sftp file every 15 minute or so, it would fail. To verify this, you need to login to the FTP machine and look at events and make sure that every thing is good. If not, make sure that you configure it properly according to your needs.

Hope this helps.
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