Server blocked access to XP_CMDSHELL

XP_CMDSHELL is one of those features that is turned off by default on SQL Server and needs to be turned on to function.

If xp_cmdshell has not been turned on you will get this error when you try to use it.

Msg 15281, Level 16, State 1, Procedure xp_cmdshell, Line 1 [Batch Start Line 17]
SQL Server blocked access to procedure ‘sys.xp_cmdshell’ of component ‘xp_cmdshell’ because this component is turned off as part of the security configuration for this server. A system administrator can enable the use of ‘xp_cmdshell’ by using sp_configure. For more information about enabling ‘xp_cmdshell’, see “Surface Area Configuration” in SQL Server Books Online.

To fix this you need to turn on xp_cmdshell, which can be done with the following sql script.

EXEC sp_configure 'show advanced options', 1;
GO
RECONFIGURE WITH OVERRIDE;
GO
EXEC sp_configure 'xp_cmdshell', 1;
GO
RECONFIGURE WITH OVERRIDE;
GO

If you are interested in the security implications, take a look at this earlier blog post with details. Is enabling xp_cmdshell a security risk?

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