Page 39 of the DSE Microsoft 365 & Identity knowledge center, with source-backed guidance and practical next steps.
Clear guidance for Microsoft 365, Entra identity, account protection, collaboration, endpoint policy, and lifecycle changes.
Microsoft states: “This article helps manually remove lingering objects after you bring an outdated domain controller (DC) or global catalog server back online.”
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Microsoft states: “This article provides solutions to an issue where event ID 5788 and event ID 5789 are logged when the DNS domain name and the Active Directory domain name differ on a Windows-based computer.”
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Microsoft states: “This article describes a registry value that administrators can use to control when the primary domain controller (PDC) is contacted, which can help reduce communication costs between sites and reduce the load on the PDC.”
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Microsoft states: “This article provides help to fix an issue that occurs if a change that is made on the local domain controller is also made on the domain controller that holds the PDC operations master role.”
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Microsoft states: “This article discusses steps about how to troubleshoot LDAP over SSL (LDAPS) connection problems.”
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Microsoft states: “When promoting a Windows Server 2008 or Windows Server 2008 R2 replica domain controller, the option to auto-install the DNS Server role is disabled or grayed out in the Active Directory Installation Wizard (DCPROMO).”
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Microsoft states: “This article provides help to solve performance issues (such as logon delays and Outlook hangs) that occur after you upgrade your Domain Controllers (DCs).”
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Microsoft states: “This article provides a solution to an issue where the Windows Server 2008 R2 or newer domain controller only returns 5000 values for an LDAP response.”
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Microsoft states: “This article describes how to diagnose Active Directory replication failures.”
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Microsoft states: “This article discusses how to use Ntdsutil to find and clean up duplicate security identifiers.”
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