Failed to access SFTP error when creating VMware ESXi Backupset

June 4, 2025

Product Version

AhsayOBM: 7.11.0.0 to 7.17.x

Operating System

All Platforms

Symptom

When creating a VMware ESXi backup set on AhsayOBM, the following error message is displayed:

[CloudException.ConnectFailedExpt] [SFtpManager.login] Failed to access SFTP

vmware-esxi-sftp-access-error-ssh-disabled-01.png

Cause

The SSH setting is disabled on the VMware ESXi host.

To perform a backup of guest virtual machines on a VMware host, AhsayOBM needs to login to the VMware host with ssh using the root account via port 22 (default).

Resolution

To resolve this issue:

  1. Enable SSH on the VMware.
  2. After enabling SSH verify the setup is correct by using telnet from the AhsayOBM machine, i.e. telnet esxi_host 22
Troubleshooting