XPcmdshell Permission issue for Non-Sysadmin users and access to network share

To enable the command shell 

-- To allow advanced options to be changed.

EXEC sp_configure 'show advanced options', 1;

GO

-- To update the currently configured value for advanced options.

RECONFIGURE;

GO

-- To enable the feature.

EXEC sp_configure 'xp_cmdshell', 1;

GO

-- To update the currently configured value for this feature.

RECONFIGURE;

GO

EXEC sp_xp_cmdshell_proxy_account '[Domain\username]','passw0rd'

use master

go

CREATE USER [Domain\username] FROM LOGIN [Domain\username]

GRANT EXECUTE ON xp_cmdshell TO [Domain\username]