Microsoft domain controller trust

The logon process uses Security Accounts Manager. The communications path uses the LDAP interface and the client is authenticated by a domain controller. So the client account is verified and passed through Security Accounts Manager to the directory service agent, then to the database layer, and finally to the database in the Extensible Storage engine ESE.

Check Event Viewer on both the client and the server. The event logs may contain error messages indicating that there's a problem. Check the System log on both the client and the server. Use the Ping utility to verify network connectivity and name resolution.

Ping both the IP address and the server name. You may also want to ping the domain name. Use the Netdiag tool to determine whether networking components are working correctly. To send detailed output to a text file, use the following command:. This file also contains other network configuration details. For example, to verify record registration, use the following commands: nslookup servername.

If either of these commands doesn't succeed, use one of the following methods to reregister records with DNS:. To detect domain controller problems, run the DCdiag utility from a command prompt. The utility runs many tests to verify that a domain controller is running correctly. Language detection, translation, and glossary support. Sentiment analysis and classification of unstructured text.

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Skip to main content. Find threads, tags, and users Comment Show 0. Current Visibility: Visible to all users. Hello, Thank you for posting here. Not all the ports that are listed in the tables here are required in all scenarios. The two domain controllers are both in the same forest, or the two domain controllers are both in a separate forest. Also, the trusts in the forest are Windows Server trusts or later version trusts. Windows Server newer versions of Windows Server have increased the dynamic client port range for outgoing connections.

The new default start port is , and the default end port is Therefore, you must increase the RPC port range in your firewalls. This differs from a mixed-mode domain that consists of Windows Server domain controllers, Windows server-based domain controllers, or legacy clients, where the default dynamic port range is through For more information about the dynamic port range change in Windows Server and Windows Server R2, see:.