Changing the Service account that cloudberry runs as to a local admin user ultimately fixed the problem.

Unintended consequence is that Windows now no longer remembers my credentials for any network drive so this is not a fix.

Fixed it. Followed these steps:

When deploying software to a Windows machine you may see the error

System error 1312 has occurred. A specified logon session does not exist. It may already have been terminated.

This is due to the local security policy “Network access: Do not allow storage of passwords and credentials for network authentication”. To fix the issue please enable this policy.

Open the Windows Local Group Policy Editor
Select Security Settings > Local Policies > Security Options.
Find and enable the Network access: Do not allow storage of passwords and credentials for network authentication policy

Is there a fix for this issue if you're running 7.0.0.648 ? I'm experiencing the same problem.

Here's the error from EventViewer for my SMBClient. Running fully updated Win10.

Smb2DiagReasonISC.

Error: A specified logon session does not exist. It may already have been terminated.

Security status: 0xC000005F
User name:
Logon ID: 0x3E7
Server name: \MYSERVER
Principal name: cifs/MYSERVER