Updates for Windows 8.1/Windows Server 2012/R2 (03/21/2018)

Windows Update[German]Microsoft released the updates KB408888882 and  KB4088883 for Windows 8.1/Windows Server 2012/R2 and KB4088883 for Windows Server 2012 on March 21, 2018.


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Update KB4088882 for Windows 8.1

Update KB4088882 is the Preview of Monthly Rollup for Windows 8.1 and Windows Server 2012 R2 Standard. This update contains the patches from KB4088876 (dated March 13, 2018) and addresses the following quality improvements.

  • Addresses issue where an iSCSI RESET might trigger a cluster failover.
  • Addresses issue where using Offline Data Transfer between two servers might add extra bytes to the destination file.
  • Addresses issue where WMI stops responding to queries and WMI-dependent operations fail after exceeding the 256 MB WMI Arbitrator memory limit. Computers that experience high WMI memory usage or that return error WBEM_E_INVALID_CLASS or WBEM_E_NOT_FOUND should install this update. For more information, see KB4096063.
  • Addresses issue where server logons become unresponsive because of an unreleased SRW lock.
  • Addresses issue where customers sometimes can’t sign in to Windows 2012 R2 servers when using a custom credential provider on a console or RDP.

The update is provided via Windows Update, but can also be downloaded and installed via Microsoft Update Catalog. Since this is a preview update that does not contain any security-relevant content, installation is not absolutely necessary.

Install restrictions

The update will only be downloaded and installed if the HKEY_LOCAL_MACHINE branch under:

SOFTWARE\Microsoft\Windows\CurrentVersion\QualityCompat

contains the 32-bit DWORD value cadca5fe-87d3-4b96-b7fb-a231484277cc set to 0x00000000 (antivirus compatibility flag).


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Update KB4088883 for Windows Server 2012

Update KB4088883 is available for Windows Server 2012 as a monthly preview rollup update. This non-security update includes improvements and fixes that were part of KB4088877 (released March 13, 2018) and also includes these new quality improvements as a preview of the next monthly rollup update. According to Microsoft, only one spell-checking problem related to custom dictionaries is fixed.

Install restrictions

The update will only be downloaded and installed if the HKEY_LOCAL_MACHINE branch under:

SOFTWARE\Microsoft\Windows\CurrentVersion\QualityCompat

contains the 32-bit DWORD value cadca5fe-87d3-4b96-b7fb-a231484277cc set to 0x00000000 (antivirus compatibility flag).


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