我有一台新的Windows计算机，并在其上安装了腻子。我从旧计算机中导出了注册表项，并导入了它们以恢复Putty连接并避免了手动添加它们。
我还将rsa公钥.ppk复制到了新计算机上，并在腻子的Auth部分中选择了它，但出现以下错误：
无法使用密钥文件“ c：\ path \ to \ id_rsa.ppk”（无法打开文件）
我很想再次在VPS服务器中重新生成密钥对，但是我认为公共密钥可以被任何计算机使用！
我想念什么吗？任何帮助表示赞赏。
谢谢！
编辑：
@Martin Prikryl请求的Plink输出（plink -v用户名@主机名-i“ c：\ path \ to \ id_rsa.ppk”）：
We claim version: SSH-2.0-PuTTY_Release_0.70
Server version: SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.1
Using SSH protocol version 2
Doing ECDH key exchange with curve Curve25519 and hash SHA-256
Server also has ssh-ed25519/ecdsa-sha2-nistp256 host keys, but we don't know any of them
Host key fingerprint is:
ssh-rsa 2048 24:2a:c3:65:b9:9a:3e:5f:59:fc:dc:15:42:31:0b:a0
Initialised AES-256 SDCTR client->server encryption
Initialised HMAC-SHA-256 client->server MAC algorithm
Initialised AES-256 SDCTR server->client encryption
Initialised HMAC-SHA-256 server->client MAC algorithm
Reading key file "D:\path\to\id_rsa.ppk"
Using username "user".
Offered public key
Offer of public key accepted
Authenticating with public key "imported-openssh-key"
Sent public key signature
Access granted
Opening session as main channel
Opened main channel
Allocated pty (ospeed 38400bps, ispeed 38400bps)
Started a shell/command
编辑2：
putty.exe -v用户名@主机名-i“ c：\ path \ to \ id_rsa.ppk”引发超时错误。