sp_xp_cmdshell_proxy_account (Transact-SQL)
Applies to: 
SQL Server
Azure SQL Database
Creates a proxy credential for xp_cmdshell.
Note
xp_cmdshell is disabled by default. To enable xp_cmdshell, see xp_cmdshell (server configuration option).
Transact-SQL syntax conventions
Syntax
sp_xp_cmdshell_proxy_account [ NULL | { 'account_name' , 'password' } ]
[ ; ]
Arguments
NULL
Specifies that the proxy credential should be deleted.
'account_name'
Specifies the Windows account to be the proxy.
'password'
Specifies the password of the Windows account.
Return code values
0 (success) or 1 (failure).
Remarks
The proxy credential is called ##xp_cmdshell_proxy_account##.
When it's executed using the NULL option, sp_xp_cmdshell_proxy_account deletes the proxy credential.
Permissions
Requires CONTROL SERVER permission.
Examples
A. Create the proxy credential
The following example shows how to create a proxy credential for a Windows account called ADVWKS\Max04 with password ds35efg##65.
EXEC sp_xp_cmdshell_proxy_account 'ADVWKS\Max04', 'ds35efg##65';
GO
B. Drop the proxy credential
The following example removes the proxy credential from the credential store.
EXEC sp_xp_cmdshell_proxy_account NULL;
GO