The client and the server have no common algorithms.

0 votes
asked Apr 27, 2012 by Tom (170 points)
edited Jun 11, 2012

When I try and ssh.Connect to a server I get the message "The client and the server have no common algorithms." I can connect using PuTTY just fine.

Any ideas? I am a novice at this so it could be something basic, but I have researched and not been able to come up with anything.

2 Answers

0 votes
answered Apr 28, 2012 by Tomas Knopp (58,580 points)
edited Apr 28, 2012

Could you please create the log of the communication as described in this article with


and mail it to We should be able to tell what is going on. (You can delete passwords and usernames from the verbose log.)

0 votes
answered Jun 11, 2012 by Jan Sotola (16,540 points)
edited Jun 11, 2012

Since Version 2012 R2, the Rebex SSH supports also hmac-sha1-96 and hmac-md5-96 MAC algorithms.

(An absence of this algorithms caused the problem reported above.)