Today, we released the February 2019 Preview of Quality Rollup.
Quality and Reliability
This release contains the following quality and reliability improvements.
CLR
- Addresses an issue in System.Threading.Timer where a single global queue that was protected by a single process-wide lock causing a issues with scalability where Timers are used frequently on multi-CPU machine. The fix can be opted into with an AppContext switch below. See instructions for enabling the switch. [750048]
- Switch name: Switch.System.Threading.UseNetCoreTimer
- Switch value to enable: true
Don’t rely on applying the setting programmatically – the switch value is read only once per AppDomain at the time when the System.Threading.Timer type is loaded.
SQL
- Addresses an issue that caused compatibility breaks seen in some System.Data.SqlClient usage scenarios. [721209]
WPF
- Improved the memory allocation and cleanup scheduling behavior of the weak-event pattern. The fix can be opted into with an AppContext switch below. See instructions for enabling the switch. [676441]
- Switch name: Switch.MS.Internal.EnableWeakEventMemoryImprovements
- Switch name: Switch.MS.Internal.EnableCleanupSchedulingImprovements
- Switch value to enable: true
Getting the Update
The Preview of Quality Rollup is available via Windows Update, Windows Server Update Services, and Microsoft Update Catalog.
Microsoft Update Catalog
You can get the update via the Microsoft Update Catalog. For Windows 10 update 1607, Windows 10 update 1703, Windows 10 update 1709 and Windows update 1803, the .NET Framework updates are part of the Windows 10 Monthly Rollup.
The following table is for Windows 10 and Windows Server 2016+ versions.
| Product Version | Cumulative Update KB |
|---|---|
| Windows 10 1803 (April 2018 Update) | Catalog 4487029 |
| .NET Framework 3.5, 4.7.2 | 4487029 |
| Windows 10 1709 (Fall Creators Update) | Catalog 4487021 |
| .NET Framework 3.5, 4.7.1, 4.7.2 | 4487021 |
| Windows 10 1703 (Creators Update) | Catalog 4487011 |
| .NET Framework 3.5, 4.7, 4.7.1, 4.7.2 | 4487011 |
| Windows 10 1607 (Anniversary Update) Windows Server 2016 |
Catalog 4487006 |
| .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2 | 4487006 |
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 4487258 |
| .NET Framework 3.5 | Catalog 4483459 |
| .NET Framework 4.5.2 | Catalog 4483453 |
| .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog 4486545 |
| Windows Server 2012 | Catalog 4487257 |
| .NET Framework 3.5 | Catalog 4483456 |
| .NET Framework 4.5.2 | Catalog 4483454 |
| .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog 4486544 |
| Windows 7 SP1 Windows Server 2008 R2 SP1 |
Catalog 4487256 |
| .NET Framework 3.5.1 | Catalog 4483458 |
| .NET Framework 4.5.2 | Catalog 4483455 |
| .NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2 | Catalog 4486546 |
| Windows Server 2008 | Catalog 4487259 |
| .NET Framework 2.0, 3.0 | Catalog 4483457 |
| .NET Framework 4.5.2 | Catalog 4483455 |
| .NET Framework 4.6 | Catalog 4486546 |
Previous Monthly Rollups
The last few .NET Framework Monthly updates are listed below for your convenience:
- February 2019 Security and Quality Rollup
- January 22, 2018 Cumulative Update for Windows 10 version 1809 and Windows Server 2019
- January 2019 Preview of Quality Rollup
- January 2019 Security and Quality Rollup
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