During 15.8 installation process and service user validation, the installer is showing the below error:
Error calling LogonUserA: Logon failure: the user has been not granted the requested logon type at this computer (HRESULT: 0x569)
Release : 15.8
OS: Windows Server
A local user account that is running DLP services, needs to have proper permissions to operate on the server. When the installation is being done through an RDP session, the installer will use logon type 3 to check the provided credentials. The SymantecDLP user is not part of the local admin group by default; ensure it is.
and the account is not listed in the policies which deny access, like:
Update: in a later case we found the same error due to the Local account being removed from Remote Desktop services, because the server was being accessed via RDP the local account requires this permission.
Make sure Local account is allowed in the 3 green check marks below, and removed from the 2 red X's below.