Strange type of windows failed authentication security event log ID 4625

[Vincent Faredge]

Has anyone seen this specific type of event 4625? Not much info as to the source and it has been happening a fair bit lately on a few servers. In summary:Status: 0xC000006DSub Status: 0x0Logon type: 3 (Network (i.e. connection to shared folder on this computer from elsewhere on network)The usual online searches has lead to nothing conclusive.The eventlog in detail:---------------------------An account failed to log on.Subject:Security ID: NULL SIDAccount Name: -Account Domain: -Logon ID: 0x0Logon Type: 3Account For Which Logon Failed:Security ID: NULL SIDAccount Name: [computer-name]$Account D

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