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@Hi_Noguchi(Hiroyuki Noguchi)in全日本ピアノ指導者協会（ピティナ）

WindowsでSSH接続のコマンドを打つと「Couldn't agree a key exchange algorithm」となるエラー解消

Posted at

症状

  • Windows 10 で ssh 接続のコマンドをコマンドプロンプト or PowerShell で打つとアラートが表示される
FATAL ERROR: Couldn't agree a key exchange algorithm (available: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256)

原因

  • ssh コマンドを打ったときに PuTTY Link: command-line connection utility 経由になってしまっている
  • PuTTY の ver. が古いせい
  • Gow ( Gnu On Windows ) がインストールされている

解決

  • Gow をアンインストールする

感想

  • ここ最近で一番ハマッてしまった……
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