Event ID 1439: Error summary for device(Port

Windows Event ID Lookup: What Windows event IDs mean: 4625, 4624, 4740, 6008, 41, 7045, 1102 and 3,000 more, with Windows' own message text, the fields and what to check.

Look up a Windows event ID from Event Viewer, a SIEM alert or a log export: what it means, the fields it records, and what to check. Many IDs are used by more than one source (event 41 is both a Kernel-Power crash and a boot error), so every definition is shown, the one people usually mean first. The message text is Windows' own, read from the event providers of Windows 10.0.26200.0, 2026-10-28; the notes are ours, based on Microsoft's security auditing reference.

Try: 4625, 4624, 4740, 6008, 41, 1074, 7045, 1102, 4104, 1149

Error summary for device(Port

Event 1439

StorPort

System log

Information

Message and fields (as Event Viewer shows them)

Error summary for device(Port = …)                    
Adapter Guid: …                    
Miniport Driver Name: …                    
SubsystemId: …                    
ControllerId: …                    
NamespaceId: …                    
TransportType: …                    
TransportAddress: …                    
Product Id: …                    
Firmware revision: …                    
Device Guid: …                    
Bus Type: …
                    
There were … total errors seen.
                    
Last seen error SQID: …                    
Last seen error command: OPC = …, CID = …                    
Last seen error status: SC = …, SCT = …                    
Last seen error completion: DW0 = …, DW1 = …, DW2 = …, DW3 …
                    
Last seen error latency: … ms