Category Archives: Security Updates

Critical DNS Server Heap Overflow Vulnerability could allow Remote Code Execution (Critical, CVE-2018-8626)

This week, for its December 11th 2018 Patch Tuesday, Microsoft released a security update for supported versions of Windows Server acting as DNS Servers. As many Domain Controllers are installed and configured as such, this is a serious vulnerability. The update addresses the vulnerability by modifying how Windows DNS servers handle requests.          About the […]

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KnowledgeBase: KB4462917 breaks Domain Controller Promotions for new Active Directory domains in existing forests

Microsoft’s October 9th, 2018 Security update KB4462917, raising Windows Server 2016 to build 14393.2551, feature a security update for the JET Database engine. However, this update seems to cause an issue with Windows Server installations intended to become Active Directory Domain Controllers. One of my team members at SCCT experienced this issue at a customer […]

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Windows Server 2016’s October 2018 Quality Update brings several Active Directory fixes

Windows Server 2016’s October 2018’s Cumulative Quality Update, bringing the OS version to 14393.2580, offers a total of three fixes for issues you might be experiencing on your Windows Server 2016-based Domain Controllers and Active Directory Federation Services (AD FS) Servers.      About Windows Server 2016 Updates Microsoft issues two major updates each month for […]

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Windows Server 2016’s August 2018 Quality Update brings several Active Directory fixes

Windows Server 2016’s August 2018’s Cumulative Quality Update, bringing the OS version to 14393.2457, offers a total of four fixes for issues you might be experiencing on your Windows Server 2016-based Domain Controllers and Active Directory Federation Services (AD FS) Servers.   About Windows Server 2016 Updates Microsoft issues two major updates each month for […]

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A Vulnerability in AD FS allows for bypassing the MFA Security Feature (CVE-2018-8340, Important)

Last Tuesday, during Microsoft’s August 2018 Patch Tuesday, Microsoft released an important security update for all supported Operating Systems to address a security feature bypass vulnerability that exists when Active Directory Federation Services (AD FS) improperly handles multi-factor authentication requests.   About the vulnerability Malicious actors often compromise passwords to initiate and expand security breaches. […]

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Windows Server 2016’s July 2018 Quality Update brings four Active Directory Federation Services fixes

Windows Server 2016’s July 2018’s Cumulative Quality Update, bringing the OS version to 14393.2395, offers four fixes for issues you might be experiencing on your Windows Server 2016-based Active Directory Federation Services (AD FS) Servers and Web Application Proxies.   About Windows Server 2016 Updates Microsoft issues two major updates each month for Windows Server […]

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Windows Server 2016’s May 2018 Quality Update brings several Active Directory fixes

Windows Server 2016’s May 2018’s Cumulative Quality Update, bringing the OS version to 14393.2237, offers several fixes for issues you might be experiencing on Windows Server 2016-based Certification Authorities (CAs) and AD FS Servers.     About Windows Server 2016 Updates Microsoft issues two major updates each month for Windows Server 2016, as outlined in the […]

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Windows Server 2016’s April 2018 Quality Update brings three Active Directory Domain Services fixes

Windows Server 2016’s April 2018’s Cumulative Quality Update, bringing the OS version to 14393.2214, offers three fixes for issues you might be experiencing on Windows Server 2016-based Active Directory Domain Controllers.   About Windows Server 2016 Updates Microsoft issues two major updates each month for Windows Server 2016, as outlined in the Patching with Windows […]

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Windows Server 2016’s March 2018 Quality Update brings two Active Directory Domain Services fixes

Windows Server 2016’s March 2018’s Cumulative Quality Update, bringing the OS version to 14393.2155, offers two fixes for issues you might be experiencing on Windows Server 2016-based Active Directory Domain Controllers.   About Windows Server 2016 Updates Microsoft issues two major updates each month for Windows Server 2016, as outlined in the Patching with Windows […]

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Windows Server 2016’s February 2018 Quality Update comes highly recommended for AD FS Servers and Web Application Proxies

Windows Server 2016’s February 2018’s Cumulative Quality Update, bringing the OS version to 14393.2097, offers several fixes for Secure Token Servers (STSs) running Active Directory Federation Services (AD FS) and Web Application Proxies. About Windows Server 2016 Updates Microsoft issues two major updates each month for Windows Server 2016, as outlined in the Patching with […]

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