Allow dynamic updates

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

To allow dynamic updates

Open DNS.
In the console tree, right-click the applicable zone, and then click Properties.
On the General tab, verify that the zone type is either Primary or Active Directory-integrated.
In Dynamic Updates, click Nonsecure and secure.

Notes

To perform this procedure, you must be a member of the Administrators group on the local computer, or you must have been delegated the appropriate authority. If the computer is joined to a domain, members of the Domain Admins group might be able to perform this procedure. As a security best practice, consider using Run as to perform this procedure.
To open DNS, click Start, click Control Panel, double-click Administrative Tools, and then double-click DNS.
Dynamic update is an RFC-compliant extension to the DNS standard. The DNS update process is defined in RFC 2136, "Dynamic Updates in the Domain Name System (DNS UPDATES)."

Open Command Prompt.
Type:

dnscmd ServerName /Config {ZoneName|..AllZones} /AllowUpdate {1|0}

Value	Description
dnscmd	Specifies the name of the command-line program.
ServerName	Required. Specifies the DNS host name of the DNS server. You can also type the IP address of the DNS server. To specify the DNS server on the local computer, you can also type a period (.)
/Config	Required. Specifies the configuration command.
ZoneName\|..AllZones	Required. Specifies the fully qualified domain name (FQDN) of the zone. To configure all zones hosted on the specified DNS server to allow dynamic updates, type ..AllZones.
/AllowUpdate	Required. Specifies the allow update command.
1\|0	Configures dynamic update. To allow dynamic updates, enter a value of 1. To not allow dynamic updates, enter a value of 0.

Notes

To perform this procedure, you must be a member of the Administrators group on the local computer, or you must have been delegated the appropriate authority. If the computer is joined to a domain, members of the Domain Admins group might be able to perform this procedure. As a security best practice, consider using Run as to perform this procedure.
To open a command prompt, click Start, point to All programs, point to Accessories, and then click Command prompt.
This procedure requires the Dnscmd Windows support tool. For information about installing Windows support tools, see Related Topics.
To view the complete syntax for this command, at a command prompt, type:

dnscmd /Config /help
Dynamic update is an RFC-compliant extension to the DNS standard. The DNS update process is defined in RFC 2136, "Dynamic Updates in the Domain Name System (DNS UPDATES)."

Format	Meaning
Italic	Information that the user must supply
Bold	Elements that the user must type exactly as shown
Ellipsis (...)	Parameter that can be repeated several times in a command line
Between brackets ([])	Optional items
Between braces ({}); choices separated by pipe (\|). Example: {even\|odd}	Set of choices from which the user must choose only one
Courier font	Code or program output

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