--- title: "MSSQLSERVER_17887 | Microsoft Docs" ms.custom: "" ms.date: "04/04/2017" ms.prod: sql ms.reviewer: "" ms.technology: supportability ms.topic: "language-reference" helpviewer_keywords: - "17887 (Database Engine error)" ms.assetid: ad0806e6-3296-4c32-b103-fccf0f8a8d3d author: MashaMSFT ms.author: mathoma --- # MSSQLSERVER_17887 [!INCLUDE[appliesto-ss-xxxx-xxxx-xxx-md](../../includes/appliesto-ss-xxxx-xxxx-xxx-md.md)] ## Details ||| |-|-| |Product Name|SQL Server| |Event ID|17887| |Event Source|MSSQLSERVER| |Component|SQLEngine| |Symbolic Name|SRV_IO_COMP_LISTENER_NONYIELDING| |Message Text|IO Completion Listener (0x%lx) Worker 0x%p appears to be non-yielding on Node %ld. Approx CPU Used: kernel %I64d ms, user %I64d ms, Interval: %I64d.| ## Explanation Indicates that there is a possible problem with the I/O Completion Port Listener on the specified node when executing the I/O Completion routine for a network read/write event. This error will go away when the I/O Completion Port Listener returns from executing the I/O Completion routine. ## User Action Contact Microsoft Customer Support Services (CSS).