---
title: "sp_validatelogins (Transact-SQL) | Microsoft Docs"
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ms.date: "06/10/2016"
ms.prod: sql
ms.prod_service: "database-engine"
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ms.topic: "language-reference"
f1_keywords: 
  - "sp_validatelogins"
  - "sp_validatelogins_TSQL"
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  - "TSQL"
helpviewer_keywords: 
  - "sp_validatelogins"
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author: VanMSFT
ms.author: vanto
---
# sp_validatelogins (Transact-SQL)
[!INCLUDE[tsql-appliesto-ss2008-xxxx-xxxx-xxx-md](../../includes/tsql-appliesto-ss2008-xxxx-xxxx-xxx-md.md)]

  Reports information about Windows users and groups that are mapped to [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] principals but no longer exist in the Windows environment.  
  
 ![Topic link icon](../../database-engine/configure-windows/media/topic-link.gif "Topic link icon") [Transact-SQL Syntax Conventions](../../t-sql/language-elements/transact-sql-syntax-conventions-transact-sql.md)  
  
## Syntax  
  
```  
  
sp_validatelogins  
```  
  
## Return Code Values  
 0 (success) or 1 (failure)  
  
## Result Sets  
  
|Column name|Data type|Description|  
|-----------------|---------------|-----------------|  
|**SID**|**varbinary(85)**|Windows security identifier (SID) of the Windows user or group.|  
|**NT Login**|**sysname**|Name of the Windows user or group.|  
  
## Remarks  
 If the orphaned server-level principal owns a database user, the database user must be removed before the orphaned server principal can be removed. To remove a database user, use [DROP USER](../../t-sql/statements/drop-user-transact-sql.md). If the server-level principal owns securables in the database, ownership of the securables must be transferred or they must be dropped. To transfer ownership of database securables, use [ALTER AUTHORIZATION](../../t-sql/statements/alter-authorization-transact-sql.md).  
  
 To remove mappings to Windows users and groups that no longer exist, use [DROP LOGIN](../../t-sql/statements/drop-login-transact-sql.md).  
  
## Permissions  
 Requires membership in the **sysadmin** or **securityadmin** fixed server role.  
  
## Examples  
 The following example displays the Windows users and groups that no longer exist but are still granted access to an instance of [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)].  
  
```  
EXEC sp_validatelogins;  
GO  
```  
  
## See Also  
 [System Stored Procedures (Transact-SQL)](../../relational-databases/system-stored-procedures/system-stored-procedures-transact-sql.md)   
 [Security Stored Procedures (Transact-SQL)](../../relational-databases/system-stored-procedures/security-stored-procedures-transact-sql.md)   
 [DROP USER (Transact-SQL)](../../t-sql/statements/drop-user-transact-sql.md)   
 [DROP LOGIN (Transact-SQL)](../../t-sql/statements/drop-login-transact-sql.md)   
 [ALTER AUTHORIZATION (Transact-SQL)](../../t-sql/statements/alter-authorization-transact-sql.md)