Audit Logon Error

Question

I need assistance in finding out the cause of error.

An error occurred while applying MBAM policies.

Volume ID:\?\Volume{e13808b1-f0be-413b-82d8-0a35d38874fd}\

Error code:

-2143485947

Details:

Access was denied by the remote endpoint.

There are many endpoints which are trying to submit the Bitlocker Recovery keys to the Server, but its failing to submit.

Validated:
-SPNs are correctly registered
-Validated kerberos authentication
-Validated the permissions on the service account
-Added the service account to MABM Advanced helpdesk users and heldesk users

Server Security log:

An account failed to log on.

Subject:

Security ID:		NULL SID

Account Name:		-

Account Domain:		-

Logon ID:		0x0

Logon Type: 3

Account For Which Logon Failed:

Security ID:		NULL SID

Account Name:		VA1WPAHFA98$

Account Domain:		CORP.COM

Failure Information:

Failure Reason:		The user has not been granted the requested logon type at this machine.

Status:			0xC000015B

Sub Status:		0x0

Process Information:

Caller Process ID:	0x0

Caller Process Name:	-

Network Information:

Workstation Name:	-

Source Network Address:	161.178.53.34

Source Port:		50252

Detailed Authentication Information:

Logon Process:		Kerberos

Authentication Package:	Kerberos

Transited Services:	-

Package Name (NTLM only):	-

Key Length:		0

This event is generated when a logon request fails. It is generated on the computer where access was attempted.

The Subject fields indicate the account on the local system which requested the logon. This is most commonly a service such as the Server service, or a local process such as Winlogon.exe or Services.exe.

The Logon Type field indicates the kind of logon that was requested. The most common types are 2 (interactive) and 3 (network).

The Process Information fields indicate which account and process on the system requested the logon.

The Network Information fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.

The authentication information fields provide detailed information about this specific logon request.

- Transited services indicate which intermediate services have participated in this logon request.

- Package name indicates which sub-protocol was used among the NTLM protocols.

- Key length indicates the length of the generated session key. This will be 0 if no session key was requested.  

I am unsure where the issue lies.