Article ID: 75291 - View products that this article applies to.
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The GUEST username in the master database is necessary for users (other than the system administrator) to log in and should not be removed. If it is removed, a user who does not have an account in the master database can no longer log in to the server. This is the case even if the user has an account in a default database other than the master.
Because the GUEST username should not be removed, there is no way to physically restrict users from the master database. That is, they can still execute the USE MASTER command. However, if the users do not have an account in the master database, they are given access under the GUEST username. To restrict users from accessing or viewing objects, revoke privileges such as SELECT and EXECUTE from the PUBLIC group, of which GUEST is a member.
Article ID: 75291 - Last Review: February 27, 2014 - Revision: 3.2
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