
Snippet of Client Trace
[22012][L]: Received HTTP/1.1 266 AccessDenied
Cache-Control: private
Content-Type: text/xml; charset=utf-8
Set-Cookie: ASP.NET_SessionId=n1yngo1xpggymgbfq2odi255; path=/; HttpOnly
Persistent-Auth: true
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Date: Tue, 15 Oct 2019 15:22:53 GMT
Content-Length: 181
[22012][M]: Body is
Snippet of DTrace on w3wp
{DonatePstFiles.Page_Load} Exception: Access Denied. (Exception from HRESULT: 0x80030005 (STG_E_ACCESSDENIED)) Info:COM Exception Diag:HRESULT: 80030005 Type:System.Runtime.InteropServices.COMException ST: at KVS.EnterpriseVault.Interop.DirectoryConnectionObjectClass.ImportPstFile(String bsSiteId, String bsArchiveId, String bsXML, String reserved)| at KVS.EnterpriseVault.PstClientServerMigration.DonatePstFiles.Page_Load(Object sender, EventArgs e) Inner:None
{ResultsBuilder} Entering: SuccessResponse
{ResultsBuilder} SuccessResponse '266' 'AccessDenied'
{ResultsBuilder} Exiting: SuccessResponse
{ResultsBuilder} Entering: CreateError
{ResultsBuilder} CreateError text '
{ResultsBuilder} Exiting: CreateError
{ResultsBuilder} Entering: CreateResults
Snippet of Network Monitor logs from client machine:
SMB2: R - NT Status: System - Error, Code = (347) STATUS_LOGON_TYPE_NOT_GRANTED SESSION SETUP (0x1)

Security restriction for Vault Service Account to access default network share of work station.
Allow Vault Service Account to remotely access the workstation.