Hi Everyone, I get the following event and can't understand what it is saying: ------------------------- An account failed to log on. Subject: Security ID: Karen-PC\Karen Account Name: Karen Account Domain: Karen-PC Logon ID: 0x64be4 Logon Type: 3 Account For Which Logon Failed: Security ID: NULL SID Account Name: Guest Account Domain: KO-PC Failure Information: Failure Reason: Account currently disabled. Status: 0xc000006e Sub Status: 0xc0000072 Process Information: Caller Process ID: 0xd54 Caller Process Name: C:\Windows\explorer.exe Network Information: Workstation Name: Karen-PC Source Network Address: - Source Port: - Detailed Authentication Information: Logon Process: Advapi Authentication Package: Negotiate 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. -------------------------------------- The part which I don't undestand is that the 'subject' is Karen ( the admin account ) . Is the log saying that Karen attempted to login as Guest ? Or does the event mean that someone tried to login as Guest while Karen is logged on? Also, the logon type was 3, which should mean someone tried to logon thru the network. The system is running Vista Business.