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VMware backup fails with error: VMWARE VMOMI65535-Unable to communicate with the remote host

 

Problem description

Virtual machine  snapshot creation fails with the following error: 

VMWARE_VMOMI65535-Unable to communicate with the remote host.

Traceback

C:\programdata\Phoenix\Vmware\backup\<Backupset>\<job_id>

[2020-03-10 22:35:56,424] [INFO] Taking Snapshot...

[2020-03-10 22:35:56,433] [INFO] Waiting for tasks to complete

[2020-03-10 22:35:56,454] [ERROR] SyncError: Unable to communicate with the remote host, since it is disconnected.

msg = 'Unable to communicate with the remote host, since it is disconnected.',

[2020-03-10 22:35:56,454] [INFO] Exception occurred while snapshot:

[2020-03-10 22:35:56,454] [ERROR] Error <class 'inSyncLib.inSyncError.SyncError'>:Unable to communicate with the remote host, since it is disconnected. (#10006ffff : vmodl.fault.HostNotConnected) (Error Code : VMWARE_VMOMI65535). Traceback -Traceback (most recent call last):

File "agents/vmware/vSphereAdapter.py", line 972, in create_snapshot

File "agents/vmware/vSphereAdapter.py", line 945, in _create_snapshot

File "inSyncLib/inSyncError.py", line 30, in raise_error

SyncError: Unable to communicate with the remote host, since it is disconnected. (#10006ffff : vmodl.fault.HostNotConnected) (Error Code : VMWARE_VMOMI65535)

Resolution

  1. Ensure that the backup proxy is in a connected state.
  2. Check the connection to ESXi port 902 from backup proxy.  Run the following command:
    #telnet <Esxi_IP / Esxi_Name> 902
  3. If the ESXi/vSphere host should be licensed for vStorage APIs, verify if the VMware license is installed.

    For example, for vSphere 6.0:
    1. In the vSphere Web Client, select Administration, and under Licensing, select Licenses.

    2. Select the Licenses tab.

    3. In the table, select a license.

    4. Click View License Key.