Smb logon event id. Guest logons do not support standard security features such as signing and encryption. Screen shot of a succesful SMB login via NTLMv2: image. If the SID can't be resolved, you'll see the source data in the event. The User field for this event (and all other events in the Audit account logon event category) doesn't help you determine who the user was; the field always reads N/A. The authentication information fields provide detailed information about this specific logon request. " - Logon GUID is a unique identifier that can be used to correlate this event with a KDC event. SMB troubleshooting can be extremely complex. Aug 8, 2023 · Server Message Block (SMB) is a network transport protocol for file systems operations to enable a client to access resources on a server. Apr 19, 2018 · Any windows updates on the server? What version of SMB does the printer support? It’s getting increasing difficult to access Windows systems with SMB v1 so make sure that the printer can support SMB v2 or better still SMB v3. Event Viewer automatically tries to resolve SIDs and show the account name. Jun 16, 2021 · In your case, we need to trace SMB traffic to find some clues. ONTAP can audit certain SMB events, including certain file and folder access events, certain logon and logoff events, and central access policy staging events. . g. may cause events to be written to the Windows Security event log on the server. Aug 13, 2025 · This article describes Server Message Block (SMB) insecure guest logon default behaviors, why you might enable guest access, and how to enable it for the SMB client using Group Policy and PowerShell. Knowing which access events can be audited is helpful when interpreting results from the event logs. The User ID field provides the SID of the account. Logon ID is a semi-unique (unique between reboots) number that identifies the logon session. A succesful NTLM Login will show as Event ID 4624. Oct 23, 2025 · The Failed SMB Logon also has an Event ID of 4625, so you can filter the log by this event type as there will be constant activity in this log view. Detection: Monitor for Event ID 4624 (Anonymous Logon) and Event ID 5140 (Access to Share) targeting IPC$. We can Click Start menu, then Type eventvwr. , workstations or servers). Rather look at the Account Information: fields, which identify the user who logged on and the user account's DNS suffix. Security ID [Type = SID]: SID of account that reported information about successful logon or invokes it. Logon ID allows you to correlate backwards to the logon event (4624) as well as with other events logged during the same logon session. " Dec 3, 2020 · SMB login issue Software & Applications general-windows , windows-server , question 3 545 April 19, 2018 Cannot for the life of me scan over SMB from Konica to Windows Networking general-windows , printers-copiers-scanners-faxes , question 10 1120 February 26, 2025 Windows 2012 R2 SMB Software & Applications general-windows , windows-server Jun 27, 2021 · The event ID’s range from 30810, 30811, 30812, and 30813. exe or just event viewer to find and open it. The primary purpose of the SMB protocol is to enable remote file system access between two systems over TCP/IP. Prevention: Disable unauthenticated remote access to the named pipes and shares of domain-joined devices (e. Jan 25, 2021 · This event indicates that the server attempted to log the user on as an unauthenticated guest and was denied by the client. Depending on how your server is configured, certain client-side events such as server access during machine startup, user logon, etc. Under the general tab, in most cases it says “A TC/IP binding was added to the specific network adapter for the SMB client. Trusted by over 40,000+ SMB customers worldwide Our products solve business issues Network visibility Assess the threat level of your network with GFI LanGuard Learn more Jun 27, 2021 · SMBClient in Event Viewer - posted in Networking: Hi there, I am quite concerned as when looking in my Event Viewer (Windows 10) and looking under Applications and Services, and then SMBClient Dec 3, 2020 · Thanks for the tip. I’ve just enabled the “Audit Detail File Share” hoping that’ll gather more information like protocol and or port accessed. png An unsucessful login will give you the details of why it failed too. Tried it all ways with SMB off and on still no luck. Oct 1, 2024 · In this case, we can use Event viewer to find out more details about the error/issue. I’ve found the below ID but it doesn’t list in the Event Viewer as being SMB2/3. The hotfix for Windows Server 2012 and Windows 8 that is mentioned in the "Hotfix information" section introduces more robust event logging for SMB. This article isn't an exhaustive troubleshooting guide Instead, it's a short primer to understand Aug 26, 2022 · The impersonation level field indicates the extent to which a process in the logon session can impersonate. Since Windows 2000, Windows disabled inbound guest access and prevented SMB2 and SMB3 client guest authentication since Windows 10. Cannot access a remote file share This can make it difficult to troubleshoot the Server Message Block (SMB) protocol and remote storage issues. However, analysis of network traffic is beyond our forum support level and due to forum security policy, we have no such channel to collect user log information. Oct 7, 2021 · We have that already enabled but don’t know the Event ID for a successful SMB2/3 connection.