When you are trying to login with a local user (NOT a domain user), you might see the following error in the <install dir>\veritas\NetBackup\logs\bpjava-msvc.log:

<16> authenticate: LogonUser failed = 1385 = Logon failure: the user has not been granted the requested logon type at this computer.

On the master server itself, the user group that the user is part of is not included in the "Allow log on locally" security policy. Please make sure that the user that you are using to login to the Java GUI, is in a users group that is present in this security policy.

To check which local machine user groups are in this security policy go to:
Local Security Settings -> Local Policies -> User Rights Assignment -> Allow log on locally

If the specific users group is not part of this local security policy please add the user group to the local security policy or add the user to a user group that is part of Allow log on locally policy.
 

"Allow log on locally" is one of several Local Security Policy categories which in combination provide "Logon Interactively" permissions.
For a full list of Security Policy settings which apply to Logon Interactively reference this MS Article: technet.microsoft.com/en-us/library/cc787053(v=ws.10).aspx