Opened 3 years ago

Closed 2 years ago

#12494 closed Bug report (fixed)

Error "Could not get reply from fputtygen" while import RSA key generated using ssh-keygen

Reported by: Selva Owned by:
Priority: normal Component: FileZilla Client
Keywords: ppk Cc:
Component version: 3.55.0 Operating system type: OS X
Operating system version: 10.15.7


In version 3.55.0, FileZilla Client on Mac throws error "Could not get reply from fputtygen" when it is trying to import an RSA key to generate the PPK formatted key. In older version, it is successfully importing the key and converting them to PPK format without this error. We are using FileZilla Pro.


  1. Generate an RSA key using command "ssh-keygen -t rsa -b 4096 -C "filezillaPPKconversionissue" -f temp"
  2. For password, provide any password like 'test'
  3. Open FileZilla 3.55.0 > File > Site Manager
  4. Protocol: SFTP
  5. host: enter host
  6. Logon type: Key file
  7. User: enter user
  8. Key file: select the private key generated "temp"
  9. FileZilla client will prompt to convert key to pPK format. click yes

10 enter key password and confirm

  1. enter filename for PPK file like 'testppk' and press SAVE in the file save dialog
  2. you will get error popup "Could not get reply from fputtygen"

Attachments (1)

FileZillaPPKkeyissue.png (103.3 KB ) - added by Selva 3 years ago.

Download all attachments as: .zip

Change History (3)

by Selva, 3 years ago

Attachment: FileZillaPPKkeyissue.png added

comment:1 by Peter C, 2 years ago

It seems 3.55 has the issue but works OK on 3.56.2.

Please refer to answer dated 27 Sep 2021 here:

comment:2 by Tim Kosse, 2 years ago

Resolution: fixed
Status: newclosed
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