October 17, 2017—KB4041686 (Preview of Monthly Rollup)

Applies to: Windows Server 2008 R2 Service Pack 1

Improvements and fixes


This non-security update includes improvements and fixes that were a part of KB4041681 (released October 10, 2017) and also includes these new quality improvements as a preview of the next Monthly Rollup update:

  • Addressed issue with the Universal CRT where _stat32i64() returns an incorrect drive number (error 0xFFFFFFFF) when using a relative path.

  • Addressed issue in the Universal CRT where incorrect characters were returned when the tolower() function was called.

  • Addressed issue where the Universal CRT _splitpath() function was not handling multibyte strings correctly, which caused apps to fail when accessing multibyte filenames.

  • Addressed issue where the Universal CRT caused linker (link.exe) to stop working for large projects.
  • Addressed issue where USBHUB.SYS randomly causes memory corruption that results in random system crashes that are extremely difficult to diagnose.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update


Symptom Workaround
After installing KB4041681, package users may see an error dialog that indicates that an application exception has occurred when closing some applications. This can affect applications that use mshtml.dll to load web content. The failure only occurs when a process is already shutting down and doesn't impact application functionality. This issue is resolved in KB4048957.
Installing this update may cause applications based on the Microsoft JET Database Engine (Microsoft Access 2007 and older or non-Microsoft applications) to fail when creating or opening Microsoft Excel .xls files. The error message is, “Unexpected error from external database driver (1). (Microsoft JET Database Engine)".

Download and install the Microsoft Access Database Engine 2010 Redistributable, and then modify the DB connection strings in Microsoft Excel to use ACE as a provider. Example: Change Provider=Microsoft.Jet.OLEDB.4.0 to Provider=Microsoft.ACE.OLEDB.12.0.

Microsoft is working on a resolution and will provide an update in an upcoming release.

 

How to get this update


This is provided as an optional update on Windows Update. For more information about how to run Windows Update, see How to get an update through Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for update 4041686.