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Basic Constraints

Updated: May 14, 2007

Applies To: Windows Server 2008

Certification authorities (CAs) must have a certificate before they can issue certificates. They use the private key associated with this certificate to digitally sign issued certificates. When a CA obtains a certificate from another CA, the parent CA may want to control whether that certificate can be used to issue certificates to other certificate servers. This is a basic constraint.

Basic constraints are used to ensure that a certificate is only used in certain applications. An example is the path length that can be specified as a basic constraint.

The following procedure only works with certificate templates that issue certificates that sign other certificates, such as cross-certified CAs and root CAs.

Membership in Domain Admins or Enterprise Admins, or equivalent, is the minimum required to complete this procedure. For more information, see Implement Role-Based Administration.

To change basic constraints

  1. Open the Certificate Templates snap-in.

  2. In the details pane, right-click the certificate template that you want to change, and then click Properties.

  3. On the Extensions tab, click Basic Constraints, and then click Edit.

  4. In Edit Basic Constraints Extension, provide the requested information.

Additional considerations

Additional references

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