![]() #Script domain availability checker install#In a Client OS versions Windows 10/8.1/7, you will need to install the RSAT tool and then install the DCDiag utility manually from the Support Tools package. In previous versions of Windows Server, you need to download and install the DCDiag utility from the following link: If you running the modern Windows Server 2019/2016/2012R2 versions and have AD DS and RSAT roles installed, then you already have Dcdiag installed. #Script domain availability checker how to#In this guide, we will show you how to check the health of your Active Directory Domain Controller with DCDiag utility. Verify DNS registration for each domain controller and verify LDAP and RPC connections to each domain controller.Ĭhecks whether the domain controller is correctly reporting or not.Ĭhecks that all application directory partitions have appropriate security descriptor reference domains.Ĭhecks the validity of cross-references for domains.Ĭhecks to see the errors in the file replication service.Ĭhecks the connectivity between the domain controller and KDC, PDC and a global catalog server.Ĭhecks the registration status of the machine account.Ĭhecks the appropriate logon permissions to allow replication to proceed.Ĭhecks the replication status and errors between domain controllers.Ĭhecks whether the RID manager is accessible or not. ![]() Some of the test performed by the DCDiag utility is shown below: With this utility, you can perform up to 30 different tests of your Active Directory Domain Controller to check its health status and other major issues that could be happening without you even knowing! This utility also allows you to check the health of all Domain Controller at a time. These tests give you a brief overview of the overall health of your Active Directory Domain Controller. It is also used to diagnose DNS servers, AD replication, and other critical domain services within your Active Directory infrastructure. The DCDiag tool is a Microsoft command-line utility that can be used to check the health of Active Directory domain controllers. ![]() Today we’re going to take a deep dive into performing Domain Controller Health Checks & Best Practices. ![]() Domain Controllers are the Most Crucial part of every AD Infrastructure and its best practice to ensure your running health checks and diagnostics on it regularly to ensure its health and functionality. ![]()
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