Tag Archives: Windows Server

Windows out-of-band updates with fix for Kerberos authentication ticket renewal issue

Posted on 2020-11-18 by guenni

[German]Microsoft has been rolling out special updates for various versions of Windows Server since November 17, 2020. These are intended to solve the problems with Kerberos authentication of ticket renewals on domain controllers.

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Windows 10/Windows Server: Update KB4586781 causes issues with Kerberos DC authentication

Posted on 2020-11-16 by guenni

[German]Short information for administrators in Windows 10 environments (version 2004 and 20H2), where Windows Server 2004/20H2 is already in use. Update KB4586781, released on November 10, 2020, causes issues with Kerberos authentication on domain controllers (DC) in very specific environments … Continue reading →

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Office 365: Download fails (in ConfigMgr) after Oct. 2020 Updates

Posted on 2020-10-30 by guenni

[German]Administrators (or users) who have installed the October 2020 updates (for Windows 10 and Windows Server pendants) are probably facing issues. ConfigMgr and other tools will (possibly) not be able to download files for Microsoft Office 365 updates afterwards. The … Continue reading →

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Microsoft specifies patching of the Netlogon vulnerability (CVE-2020-1472)

Posted on 2020-09-30 by guenni

[German]Microsoft has revised and clarified its guidance on how to close the Netlogon vulnerability in Windows Server installations that act as domain controllers. This is in response to feedback from users who were confused by previous support posts.

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Zerologon Exploits are used in the wild, patching (Windows Server, Samba) recommended

Posted on 2020-09-24 by guenni

[German]I bring up the Zerologon vulnerability issue again. Microsoft warns that attackers actively use the Windows Server Zerologon exploits for attacks. Windows Server administrators should urgently install the necessary security updates. But Samba servers are also vulnerable. Here is some … Continue reading →

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Why ISL Online: Critical factors when choosing a remote desktop solution

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CISA Warning: Patch your Windows Servers against CVE-2020-1472 (Zerologon)

Posted on 2020-09-21 by guenni

[German]The United States Agency for Cyber Security and Infrastructure Security (CISA) has issued an emergency order giving the U.S. government agencies a four-day deadline to implement a Windows Server patch against the Zerologon vulnerability (CVE-2020-1472).

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Windows Server: Zerologon vulnerability (CVE-2020-1472) allows domain hijacking

Posted on 2020-09-16 by guenni

[German]Security researchers have uncovered a vulnerability in all versions of Windows Server that allows domain transfer with a simple approach. This vulnerability, called Zerologon (CVE-2020-1472), was closed with the security updates of August 2020. Those who have not yet installed … Continue reading →

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Windows 10 und Server 2016/2019: Events with ID 650

Posted on 2020-08-31 by guenni

[German]In Windows 10 cliets as well as in Windows Server 2016 and Windows Server 2019, events with ID 650 may occur in the Event Viewer. Microsoft has provided an explanation for these entries as of August 13, 2020.

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Windows Server vNext Insider Preview Build 20201

Posted on 2020-08-26 by guenni

Microsoft has also released the Windows Insider Preview Build 20201 for Windows Server vNext on August 26, 2020. This is the variant from the Windows Server vNext Long-Term Servicing Channel (LTSC). This release includes both the Desktop Experience and Server … Continue reading →

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Windows Domain Controller suddenly generate EventID 5829 warnings (August 11, 2020)

Posted on 2020-08-17 by guenni

[German]Administrators of Active Directory (AD) domain controllers may notice EventID 5829 warnings in the Event Viewer since August 2020 Patchday (August 11, 2020). This is intentional, Microsoft is addressing a problem with a vulnerability (CVE-2020-1472) in Netlogon connections. Admins have … Continue reading →

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