This non-security update includes improvements and fixes that were a part of KB4041693 (released October 10, 2017) and also includes these new quality improvements as a preview of the next Monthly Rollup update:
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Addressed memory leak issue in combase that occurs while converting Rich Text to Unicode.
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Addressed issue in which using smart card authentication to connect RDP to the Windows 2012 RDS server fails intermittently. The issue is related to a timing problem in the LogonUI process. It is most common when clients use virtual smart cards.
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Addressed issue that affects the Universal CRT in which _stat32i64() returns an incorrect drive number (error 0xFFFFFFFF) when using a relative path.
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Addressed issue in the Universal CRT in which incorrect characters were returned when the tolower() function was called.
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Addressed issue in which the Universal CRT _splitpath() function was not handling multibyte strings correctly. This caused apps to fail when accessing multibyte filenames.
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Addressed issue in which the Universal CRT caused linker (link.exe) to stop working for large projects.
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Addressed issue in which the MSMQ performance counter (MSMQ Queue) may not populate queue instances when the server hosts a clustered MSMQ role.
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Addressed issue in which AD FS can no longer ignore "prompt=login" during authentication. A "Disabled" option was added to support scenarios in which password authentication is not used. For more information, see AD FS ignores the "prompt=login" parameter during an authentication in Windows Server 2012 R2.
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Addressed issue in AD FS in which MSISCookies in request headers could eventually overflow the headers size limit. This caused a failure to authenticate and return HTTP status code 400: “Bad Request - Header Too Long."
- Addressed issue in which adding user rights to an RMS template caused the Active Directory RMS management console (mmc.exe) to stop working and return an unexpected exception.
- Addressed issue in which USBHUB.SYS randomly caused memory corruption that caused random system crashes that are extremely difficult to diagnose.
- Added support for LTO8 tape drives into ltotape.sys for Windows Server 2012 R2.
- Addressed issue where Miniports that make 64-bit DMA requests from a single 4 GB region may fail, preventing the system from booting.
For more information about the resolved security vulnerabilities, please see the Security Update Guide.