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Category Archives: Microsoft Windows Server 2012 R2

Microsoft Windows Server 2012 R2

Security Thoughts: Vulnerability in DNS Server could allow remote code execution (MS16-071, KB3164065, CVE-2016-3227)

Written on June 15, 2016 at 8:37 AM, by

Yesterday, Microsoft released update KB3161951 as part of its June 2016 Patch Tuesday to address a critical use after free vulnerability that affects DNS Servers running Windows Server 2012, Windows Server 2012 R2 and Windows Server 2016 Technical Previews.   About the vulnerability A remote code execution vulnerability exists in Windows Domain Name System (DNS) […]

Security Thoughts: Update for Active Directory Federation Services to Address Denial of Service (Important, MS16-020, KB3134222, CVE-2016-0037)

Written on February 10, 2016 at 9:56 AM, by

Today, Microsoft released MS16-020, a Security Bulletin addressing an issue with Active Directory Federation Services (AD FS) 3.0 on Windows Server 2012 R2. The vulnerability could allow denial of service if an attacker sends certain input data during forms-based authentication to an ADFS server, causing the server to become nonresponsive.   About Active Directory Federation […]

Knowledgebase: You receive Event-ID 1539 and ‘This device does not allow its write-caching setting to be changed’ warnings on virtualized Generation 2 Domain Controllers

Written on October 7, 2015 at 9:39 PM, by

When I was in training as an Active Directory admin, I was taught that the disk(s) where the Active Directory database and Active Directory transaction logs reside are automatically configured with write-back caching disabled. Today, roughly 15 years later, I found out that although my teacher was right, things have changed and might be counter-intuitive […]

KnowledgeBase: ERROR_GEN_FAILURE [0x0000001f] when attempting to join VMware vCenter Server Appliance 6 U1 to a Windows Server 2012 R2-based Active Directory domain

Written on September 24, 2015 at 9:33 AM, by

An issue has been identified when you try and join a VMware vCenter Server Appliance (VCSA) version 6 Update 1 to a Windows Server 2012 R2-based Active Directory domain. You receive an error and the VCSA is not joined to the domain.    The situation The VMware vCenter Server Appliance (VCSA) is a virtual installation […]

Active Directory Domain Services Management Pack updated

Written on September 10, 2015 at 12:04 PM, by

While it has been a while since the Active Directory Domain Services Management Pack was updated, the team has now released an updated version with a crucial fix for Active Directory admins in my region of the world that has potentially been plaguing them for over a year.   About System Center Operations Manager With […]

Video: Join the Virtualized!

Written on February 25, 2015 at 7:09 AM, by

Windows 10 brings a huge change when it comes to joining the trusted environment. How does the virtualization of the join change the security paradigm that we got so used to over the past decade. What happens to single sign-on and management of the workplace? Where are the new boundaries of the virtualized territory? How […]

Video: Running highly-sensitive Domain Controllers on Hyper-V and Azure

Written on February 25, 2015 at 7:09 AM, by

Active Directory Domain Controllers hold the keys to your kingdom. So how do you virtualize these castles of identity, without compromising on the requirements of your organization? In this session, Raymond Comvalius (Windows Expert – IT Pro MVP) and Sander Berkouwer (Directory Services MVP) give best practices for hardening, backing up, restoring and managing virtualized […]

WorkPlace Join vs. DirectAccess

Written on February 9, 2015 at 7:26 PM, by

Previously, I discussed the differences and commonalities for WorkPlace Join and Domain Join. Today, I would like to discuss the differences and commonalities between two very similar and yet widely different remote access technologies: WorkPlace Join and DirectAccess.   Let’s start with the characteristics these two technologies have in common: WorkPlace Join and DirectAccess are […]

KnowledgeBase: Domain Controller promotion stops responding when NetBIOS over TCPIP is disabled in Windows Server 2012 R2

Written on January 14, 2015 at 2:54 PM, by

Sometimes, an easy task becomes daunting. Especially when you’re working with technology like Active Directory Domain Services and you can’t even get a server promoted to a Domain Controller because the promotion process hangs and you’re left without clues.   The situation You can promote a Windows Server to an Active Directory in the following […]

Advances in Active Directory since Windows Server 2003

Written on January 12, 2015 at 10:25 AM, by

In six months time, on July 14 2015, Microsoft ends the extended support for Windows Server 2003. After 11 years and 6 months (Windows Server 2003 became generally available on May 28th, 2003) the plug is pulled on updates to the product and the support information on TechNet, MSDN and its KnowledgeBase. Running Active Directory on Operating […]