Depending on the configuration and services that are running on a particular computer, different components perform DNS updates.
There is no centralized way, such as a tool or registry keys, to manage the DNS update behavior of all components. This article describes each component and how to modify that particular component's behavior. Note After you change one of these components by modifying the registry keys that are listed in this article, you must stop and restart the affected services.
Sometimes, you must restart the computer. These instances are noted. Important This section, method, or task contains steps that tell you how to modify the registry.
However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully.
For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:.
This section describes how to enable and disable the following lookup registrations:. If the check box was checked before the policy was enabled, it will still be checked after the policy is enabled.
The registry setting made by the policy is a global setting that affects all interfaces, not an adaptor-specific setting. This key disables DNS update registration for all adaptors on this computer. With DNS update, DNS client computers automatically register and update their resource records whenever address changes occur.
To disable DNS update for a particular adaptor, add the DisableDynamicUpdate value to an interface name registry subkey and set its value to 1. To disable DNS updates on all adaptors in a computer, add the DisableDynamicUpdate value to the following subkey, and then set its value to If the check box was selected before the registry change, it will stay selected after this registry change. This registry setting is not an adaptor-specific setting, but a global setting that affects all interfaces.
This global setting is not revealed in the user interface. Windows does not add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry.
To make the changes to this value effective, you must restart Windows When you want forward lookup A resource record registrations but not reverse lookups PTR resource record registrations, use the following registry subkey to disable registrations of PTR resource records:. PTR resource records associate an IP address with a computer name. This entry is designed for enterprises where the primary DNS server that is authoritative for the reverse lookup zone cannot, or is configured not to, perform DNS updates.
It reduces unnecessary network traffic and prevents event log errors that record unsuccessful tries to register PTR resource records. Register this connection's addresses in DNS. Each computer has a primary DNS suffix. Additionally, each adaptor can also have a separate DNS suffix that is configured for itself. For additional information about DNS options, click the following article number to view the article in the Microsoft Knowledge Base:. To disable DNS updates for a particular adaptor, add the DisableDynamicUpdate value to an interface name registry subkey, and then set its value to 1.
To disable DNS updates on all adaptors in a computer, add the DisableDynamicUpdate value to the following registry subkey, and then set its value to By default, DNS records are re-registered dynamically and periodically every 24 hours by Windows Professional and every hour by Windows Server and by Windows Advanced Server.
You can use the following registry subkey to modify the update interval:. This is true regardless of whether the computer is a client or a server. You can use the following registry subkey to modify the TTL value:.
On the Edit menu, point to New , and then click Key. Type the name of the key according to the following cipher names:. Right-click Enabled , and then click Modify. In the Value data box, type , and then click OK. On the File menu, click Exit to quit Registry Editor. Note Repeat these steps to disable each weak cipher.
In order of preference, the cipher suites that are available after you successfully follow these steps are as follows:. Need more help? Expand your skills. Get new features first. Was this information helpful? Search related threads. Remove From My Forums.
Answered by:. Archived Forums. Sign in to vote. Thanks, Roy. Wednesday, October 17, AM. Thursday, October 18, AM. It probably not actually documented, but the process is pretty simple.
Thursday, October 18, PM. Hi, I would like to confirm what is the current situation? Friday, October 26, AM.
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