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Error with Putty

we try to make SSH connection but putty appear this message .

this is version 0.63 putty and we try with latest version

Remote side sent disconnect message

type 3 (Key exchange failed )

error negotiation common algorithm

when we using seccurCRT

we got this message 


Key exchange failed.
No compatible key-exchange method. The server supports these methods: diffie-hellman-group-exchange-sha256

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