Domain Controller

March update can cause domain controller to crash

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Like the updates for Exchange Server, the March update for Windows Server also contains a serious error. The update causes a memory leak in the LSASS process, which can then lead to a domain controller restarting or crashing. Only domain controllers are affected by this problem; the problem does not occur on normal member servers. Currently ... Read more

Changing the IP address and host name of a domain controller

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Sometimes it may be necessary to subsequently change the IP and host name of a domain controller, for example if a new domain controller replaces an old one and is to be accessible under the same IP and name. Changing the IP address of a domain controller is normally possible without any problems, changing the host name of a domain controller ... Read more

VMware vSphere VMs: Caution with vMotion operations and time-critical VMs such as domain controllers

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I recently fell into this trap, because with time-critical VMs, such as domain controllers, which are operated on VMware vSphere, you have to pay attention to a small peculiarity. Since an incorrect time can have far-reaching consequences, here is a short article on the subject. The following problem has occurred. An NTP server ... Read more

KB4457127 causes problems on DCs in connection with Exchange

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Das September Update KB445127 für Windows Server 2016 vom 20.09.2018 sorgt auf Domain Controllern für Probleme in Verbindung mit der Exchange GAL (Globale Adressliste). Nachdem das Update auf Windows Server 2016 Domain Controllern installiert wurde, können Outlook Clients nicht mehr die Globale Adressliste aufrufen: Ich konnte dieses Problem ebenfalls nachvollziehen, sobald mehr als 18 Empfänger … Read more

Migration Domain Controller to Server 2016

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Ich habe nun schon einige Mails bezüglich der Migration von Domain Controllern erhalten, die noch mit einem älteren Betriebssystem laufen. In den meisten Mails geht es darum, die IP-Adresse des ursprünglichen Domain Controllers beizubehalten. Die Umgebungen, die in den Mails geschildert wurden, waren alle samt ähnlich, nur das Betriebssystem auf dem der ursprüngliche Domain Controller … Read more