Ken Yau (Customer) asked a question.

October 29, 2026 at 9:39 AM
Anyone getting "server rejected public key" after upgrading from 12.9 to 13.0.1

One of our suppliers is now rejecting SFTP connection after we upgraded from 12.9 to 13.0.1, even though we are using the same key. Their FTP server is reporting the public key as RSA-SSH (SHA1) with version 13.0.1 but reports the public key as SHA-512 using version 12.9. We have logged a ticket with Progress support who have identified it as a defect with 13.0.1.Still waiting for development team to release a fix.

  • 5 answers
  • 36 views

  • Bradley Tostenson (Customer)

    Hi Ken,

     

    We are having the same issue since upgrading to 13. Effectively the SSH2-RSA keys that we use are not working correctly. Progress is aware of the issue and they have identified it as a defect.

     

    I'm told that using a password in the meantime or building out a different key type is the only resolution thus far.

     

    I have been pestering them weekly on an ETA but unfortunately I've been given nothing on that front yet.

  • Ken Yau (Customer)

    Hi Bradley,

    I've been given the same advice from Progress support. We've had this issue for nearly 2 months now and have had to resort to using previous version 12.9 on a test machine to access the files for one of our client suppliers.

  • Bradley Tostenson (Customer)

    Hi Ken,

     

    Well if it makes you feel any better, I'm not going to give up poking at them until they provide SOMETHING resembling an ETA. I assume there has to be more than the two of us having this issue.

  • Info Sys (Leadec Corp)

    Was just about to upgrade to the newest version.

    That is NOT happening now.

     

    Thanks for letting me know.

    • Ken Yau (Customer)

      Yes, I'd wish had known about this defect before upgrading. Very disappointing that Progress hadn't fully tested before releasing 13.0.1. Even more disappointing that it's taking so long for them to provide a fix!