Today, we are releasing the of .

Quality and Reliability

This release contains the following quality and reliability improvements.

ASP.NET

  • Resolves an issue where an ASP.NET web application is continuously running under high load on high-end web server(40+ CPU cores), it may suffer high thread contention which can cause high CPU usage. [624745]

CLR

SQL

  • Resolves an issue where SqlClient login may use an infinite timeout due to truncating a small millisecond timeout to zero when converting to seconds. [631196]

WCF

  • A race-condition existed in AsyncResult that closes a WaitHandle before Set() is called. When this happens, the process crashes with an ObjectDisposedException. [590542]
  • Enable customers using .NET 2.0, 3.0, 3.5, 3.5.1 to use their program under TLS 1.1 or TLS 1.2 [639940]

WPF

  • In multi-threaded WPF applications that process large packages simultaneously, there is potential for a deadlock when one of these files is closing and the other starts to consume larger amounts of memory.[602405]
  • Under certain conditions, WPF applications (like SCCM) using WindowChromeWorker experience high CPU usage or hangs. [621651]

Note: Additional information on these improvements is not available. The VSTS bug number provided with each improvement is a unique ID that you can give Microsoft Customer Support, include in StackOverflow comments or use in web searches.

Getting the Update

The Preview of Quality Rollup is available via Windows Update, Windows Server Update Services, Microsoft Update Catalog, and Docker.

Microsoft Update Catalog

You can get the update via the Microsoft Update Catalog. For Windows 10, .NET Framework updates are part of the Windows 10 Monthly Rollup.

The following table is for Windows 10 and Windows Server 2016+.

The following table is for earlier Windows and Windows Server versions.

Product Version Preview of Quality Rollup KB
Windows 8.1
Windows RT 8.1
Windows Server 2012 R2
Catalog
4346082
.NET Framework 3.5 4342310
.NET Framework 4.5.2 4342317
.NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.1, 4.7.2 4342315
Windows Server 2012 Catalog
4346081
.NET Framework 3.5 4342307
.NET Framework 4.5.2 4342318
.NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.1, 4.7.2 4342314
Windows 7
Windows Server 2008 R2
Catalog
4346080
.NET Framework 3.5.1 4342309
.NET Framework 4.5.2 4342319
.NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.1, 4.7.2 4342316
Windows Server 2008 Catalog
4346083
.NET Framework 2.0, 3.0 4342308
.NET Framework 4.5.2 4342319
.NET Framework 4.6 4342316

Previous Monthly Rollups

The last few .NET Framework Monthly updates are listed below for your convenience:





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