---
title: 4864(S) A namespace collision was detected. (Windows 10)
description: Describes security event 4864(S) A namespace collision was detected.
ms.pagetype: security
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library
ms.localizationpriority: none
author: dansimp
ms.date: 04/19/2017
ms.reviewer: 
manager: dansimp
ms.author: dansimp
---

# 4864(S): A namespace collision was detected.

**Applies to**
-   Windows 10
-   Windows Server 2016


This event is generated when a namespace collision was detected.

There is no example of this event in this document.

***Subcategory:*** [Audit Authentication Policy Change](audit-authentication-policy-change.md)

***Event Schema:***

*A namespace collision was detected.*

*Target Type:%1*

*Target Name:%2*

*Forest Root:%3*

*Top Level Name:%4*

*DNS Name:%5*

*NetBIOS Name:%6*

*Security ID:%7*

*New Flags:%8*

***Required Server Roles:*** Active Directory domain controller.

***Minimum OS Version:*** Windows Server 2008.

***Event Versions:*** 0.

## Security Monitoring Recommendations

-   There is no recommendation for this event in this document.