https://support.tools/categories/active-directory/Recent content in Active Directory on Support ToolsHugoen-USWed, 17 Jun 2026 00:00:00 -0500https://support.tools/domain-controller-migration-fsmo-transfer-enterprise-guide/Wed, 17 Jun 2026 00:00:00 -0500https://support.tools/domain-controller-migration-fsmo-transfer-enterprise-guide/<p>Active Directory domain controller migration requires systematic planning and precise execution to maintain directory service availability during infrastructure transitions. This comprehensive guide covers domain controller deployment, FSMO role transfers, SYSVOL migration from FRS to DFSR, and production-ready decommissioning procedures.</p>https://support.tools/active-directory-domain-controller-upgrade-adprep-enterprise-guide/Tue, 17 Mar 2026 00:00:00 -0500https://support.tools/active-directory-domain-controller-upgrade-adprep-enterprise-guide/<p>Active Directory domain controller upgrades require meticulous planning and systematic execution to maintain directory service integrity across enterprise forests. This comprehensive guide covers adprep preparation, supported upgrade paths, and production-ready procedures for Windows Server domain controller in-place upgrades.</p>https://support.tools/required-domain-controller-ports/Mon, 14 Oct 2024 19:26:00 -0500https://support.tools/required-domain-controller-ports/<p>In an Active Directory (AD) environment, <strong>Domain Controllers (DCs)</strong> must communicate over a variety of ports to provide services such as authentication, replication, and management. Properly configuring network firewalls to allow these ports is critical to ensure the domain operates smoothly without disruptions.</p> <p>This post outlines all the required ports for Domain Controllers to function correctly in a secure and reliable AD environment.</p>