Differences between xp_instance_RegRead and xp_RegRead

Question

Whats the difference between XP_REGREAD and XP_INSTANCE_REGREAD. How to use them, is there any docs on these?

Answer 1

Gabriel, The Service account does not have to be dbo. As long as the user is a user in the master database, you can grant execute permissions on system objects in the master db.

GRANT EXEC ON OBJECT::master.dbo.xp_instance_regread TO ServiceAccountUserName